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PDE Updates Post Release

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152
windows/security/information-protection/personal-data-encryption/configure-pde-in-intune.md
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@ -3,16 +3,17 @@ title: Configure Personal Data Encryption (PDE) in Intune
description: Configuring and enabling Personal Data Encryption (PDE) required and recommended policies in Intune
author: frankroj
ms.author: frankroj
ms.reviewer: rafals
ms.reviewer: rhonnegowda
manager: aaroncz
ms.topic: how-to
ms.prod: windows-client
ms.technology: itpro-security
ms.localizationpriority: medium
ms.date: 09/22/2022
ms.date: 12/07/2022
---
<!-- Max 5963468 OS 32516487 -->
<!-- Max 6946251 -->
# Configure Personal Data Encryption (PDE) policies in Intune
@ -20,104 +21,205 @@ ms.date: 09/22/2022
### Enable Personal Data Encryption (PDE)
1. Sign into the Intune
1. Sign into [Endpoint Manager admin center](https://go.microsoft.com/fwlink/?linkid=2109431).
2. Navigate to **Devices** > **Configuration Profiles**
3. Select **Create profile**
4. Under **Platform**, select **Windows 10 and later**
5. Under **Profile type**, select **Templates**
6. Under **Template name**, select **Custom**, and then select **Create**
7. On the ****Basics** tab:
7. On the **Basics** tab:
1. Next to **Name**, enter **Personal Data Encryption**
2. Next to **Description**, enter a description
2. Next to **Description**, enter a description
8. Select **Next**
9. On the **Configuration settings** tab, select **Add**
10. In the **Add Row** window:
1. Next to **Name**, enter **Personal Data Encryption**
2. Next to **Description**, enter a description
3. Next to **OMA-URI**, enter in **./User/Vendor/MSFT/PDE/EnablePersonalDataEncryption**
4. Next to **Data type**, select **Integer**
5. Next to **Value**, enter in **1**
11. Select **Save**, and then select **Next**
12. On the **Assignments** tab:
1. Under **Included groups**, select **Add groups**
2. Select the groups that the PDE policy should be deployed to
3. Select **Select**
4. Select **Next**
13. On the **Applicability Rules** tab, configure if necessary and then select **Next**
14. On the **Review + create** tab, review the configuration to make sure everything is configured correctly, and then select **Create**
#### Disable Winlogon automatic restart sign-on (ARSO)
### Disable Winlogon automatic restart sign-on (ARSO)
1. Sign into [Endpoint Manager admin center](https://go.microsoft.com/fwlink/?linkid=2109431).
1. Sign into the Intune
2. Navigate to **Devices** > **Configuration Profiles**
3. Select **Create profile**
4. Under **Platform**, select **Windows 10 and later**
5. Under **Profile type**, select **Templates**
6. Under **Template name**, select **Administrative templates**, and then select **Create**
7. On the ****Basics** tab:
7. On the **Basics** tab:
1. Next to **Name**, enter **Disable ARSO**
2. Next to **Description**, enter a description
8. Select **Next**
9. On the **Configuration settings** tab, under **Computer Configuration**, navigate to **Windows Components** > **Windows Logon Options**
10. Select **Sign-in and lock last interactive user automatically after a restart**
11. In the **Sign-in and lock last interactive user automatically after a restart** window that opens, select **Disabled**, and then select **OK**
12. Select **Next**
13. On the **Scope tags** tab, configure if necessary and then select **Next**
12. On the **Assignments** tab:
14. On the **Assignments** tab:
1. Under **Included groups**, select **Add groups**
2. Select the groups that the ARSO policy should be deployed to
3. Select **Select**
4. Select **Next**
13. On the **Review + create** tab, review the configuration to make sure everything is configured correctly, and then select **Create**
## Recommended prerequisites
15. On the **Review + create** tab, review the configuration to make sure everything is configured correctly, and then select **Create**
#### Disable crash dumps
## Security hardening recommendations
### Disable kernel-mode crash dumps and live dumps
1. Sign into [Endpoint Manager admin center](https://go.microsoft.com/fwlink/?linkid=2109431).
1. Sign into the Intune
2. Navigate to **Devices** > **Configuration Profiles**
3. Select **Create profile**
4. Under **Platform**, select **Windows 10 and later**
5. Under **Profile type**, select **Settings catalog**, and then select **Create**
6. On the ****Basics** tab:
1. Next to **Name**, enter **Disable Hibernation**
6. On the **Basics** tab:
1. Next to **Name**, enter **Disable Kernel-Mode Crash Dumps**
2. Next to **Description**, enter a description
7. Select **Next**
8. On the **Configuration settings** tab, select **Add settings**
9. In the **Settings picker** windows, select **Memory Dump**
10. When the settings appear in the lower pane, under **Setting name**, select both **Allow Crash Dump** and **Allow Live Dump**, and then select the **X** in the top right corner of the **Settings picker** window to close the window
11. Change both **Allow Live Dump** and **Allow Crash Dump** to **Block**, and then select **Next**
12. On the **Scope tags** tab, configure if necessary and then select **Next**
13. On the **Assignments** tab:
1. Under **Included groups**, select **Add groups**
2. Select the groups that the crash dumps policy should be deployed to
2. Select the groups that the disable crash dumps policy should be deployed to
3. Select **Select**
4. Select **Next**
14. On the **Review + create** tab, review the configuration to make sure everything is configured correctly, and then select **Create**
#### Disable hibernation
### Disable Windows Error Reporting (WER)/Disable user-mode crash dumps
1. Sign into [Endpoint Manager admin center](https://go.microsoft.com/fwlink/?linkid=2109431).
1. Sign into the Intune
2. Navigate to **Devices** > **Configuration Profiles**
3. Select **Create profile**
4. Under **Platform**, select **Windows 10 and later**
5. Under **Profile type**, select **Settings catalog**, and then select **Create**
6. On the ****Basics** tab:
1. Next to **Name**, enter **Disable Hibernation**
6. On the **Basics** tab:
1. Next to **Name**, enter **Disable Windows Error Reporting (WER)**
2. Next to **Description**, enter a description
7. Select **Next**
8. On the **Configuration settings** tab, select **Add settings**
9. In the **Settings picker** windows, select **Power**
10. When the settings appear in the lower pane, under **Setting name**, select **Allow Hibernate**, and then select the **X** in the top right corner of the **Settings picker** window to close the window
11. Change **Allow Hibernate** to **Block**, and then select **Next**
9. In the **Settings picker** windows, expand to **Administrative Templates** > **Windows Components**, and then select **Windows Error Reporting**
10. When the settings appear in the lower pane, under **Setting name**, select **Disable Windows Error Reporting**, and then select the **X** in the top right corner of the **Settings picker** window to close the window
11. Change both **Disable Windows Error Reporting** to **Enabled**, and then select **Next**
12. On the **Scope tags** tab, configure if necessary and then select **Next**
13. On the **Assignments** tab:
1. Under **Included groups**, select **Add groups**
2. Select the groups that the hibernation policy should be deployed to
2. Select the groups that the disable WER dumps policy should be deployed to
3. Select **Select**
4. Select **Next**
14. On the **Review + create** tab, review the configuration to make sure everything is configured correctly, and then select **Create**
### Disable hibernation
1. Sign into [Endpoint Manager admin center](https://go.microsoft.com/fwlink/?linkid=2109431).
2. Navigate to **Devices** > **Configuration Profiles**
3. Select **Create profile**
4. Under **Platform**, select **Windows 10 and later**
5. Under **Profile type**, select **Settings catalog**, and then select **Create**
6. On the **Basics** tab:
1. Next to **Name**, enter **Disable Hibernation**
2. Next to **Description**, enter a description
7. Select **Next**
8. On the **Configuration settings** tab, select **Add settings**
9. In the **Settings picker** windows, select **Power**
10. When the settings appear in the lower pane, under **Setting name**, select **Allow Hibernate**, and then select the **X** in the top right corner of the **Settings picker** window to close the window
11. Change **Allow Hibernate** to **Block**, and then select **Next**
12. On the **Scope tags** tab, configure if necessary and then select **Next**
13. On the **Assignments** tab:
1. Under **Included groups**, select **Add groups**
2. Select the groups that the disable hibernation policy should be deployed to
3. Select **Select**
4. Select **Next**
14. On the **Review + create** tab, review the configuration to make sure everything is configured correctly, and then select **Create**
## See also
- [Personal Data Encryption (PDE)](overview-pde.md)
- [Personal Data Encryption (PDE) FAQ](faq-pde.yml)
- [Personal Data Encryption (PDE) FAQ](faq-pde.yml)

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windows/security/information-protection/personal-data-encryption/faq-pde.yml
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@ -5,13 +5,16 @@ metadata:
description: Answers to common questions regarding Personal Data Encryption (PDE).
author: frankroj
ms.author: frankroj
ms.reviewer: rafals
ms.reviewer: rhonnegowda
manager: aaroncz
ms.topic: faq
ms.prod: windows-client
ms.technology: itpro-security
ms.localizationpriority: medium
ms.date: 09/22/2022
ms.date: 12/07/2022
# Max 5963468 OS 32516487
# Max 6946251
title: Frequently asked questions for Personal Data Encryption (PDE)
summary: |
@ -28,45 +31,49 @@ sections:
answer: |
No. It's still recommended to encrypt all volumes with BitLocker Drive Encryption for increased security.
- question: Can an IT admin specify which files should be encrypted?
- question: How are files protected by PDE selected?
answer: |
Yes, but it can only be done using the [PDE APIs](/uwp/api/windows.security.dataprotection.userdataprotectionmanager).
[PDE APIs](/uwp/api/windows.security.dataprotection.userdataprotectionmanager) are used to select which files are protected using PDE.
- question: Do I need to use OneDrive as my backup provider?
- question: Do I need to use OneDrive in Microsoft 365 as my backup provider?
answer: |
No. PDE doesn't have a requirement for a backup provider including OneDrive. However, backups are strongly recommended in case the keys used by PDE to decrypt files are lost. OneDrive is a recommended backup provider.
No. PDE doesn't have a requirement for a backup provider, including OneDrive in Microsoft 365. However, backups are recommended in case the keys used by PDE to protect files are lost. OneDrive in Microsoft 365 is a recommended backup provider.
- question: What is the relation between Windows Hello for Business and PDE?
answer: |
During user sign-on, Windows Hello for Business unlocks the keys that PDE uses to decrypt files.
During user sign-on, Windows Hello for Business unlocks the keys that PDE uses to protect files.
- question: Can a file be encrypted with both PDE and EFS at the same time?
- question: Can a file be protected with both PDE and EFS at the same time?
answer: |
No. PDE and EFS are mutually exclusive.
- question: Can PDE encrypted files be accessed after signing on via a Remote Desktop connection (RDP)?
- question: Can PDE protected files be accessed after signing on via a Remote Desktop connection (RDP)?
answer: |
No. Accessing PDE encrypted files over RDP isn't currently supported.
No. Accessing PDE protected files over RDP isn't currently supported.
- question: Can PDE encrypted files be access via a network share?
- question: Can PDE protected files be accessed via a network share?
answer: |
No. PDE encrypted files can only be accessed after signing on locally to Windows with Windows Hello for Business credentials.
No. PDE protected files can only be accessed after signing on locally to Windows with Windows Hello for Business credentials.
- question: How can it be determined if a file is encrypted with PDE?
- question: How can it be determined if a file is protected with PDE?
answer: |
Encrypted files will show a padlock on the file's icon. Additionally, `cipher.exe` can be used to show the encryption state of the file.
- Files protected with PDE and EFS will both show a padlock on the file's icon. To verify whether a file is protected with PDE vs. EFS:
1. In the properties of the file, navigate to **General** > **Advanced**. The option **Encrypt contents to secure data** should be selected.
2. Select the **Details** button.
3. If the file is protected with PDE, under **Protection status:**, the item **Personal Data Encryption is:** will be marked as **On**.
- [`cipher.exe`](/windows-server/administration/windows-commands/cipher) can also be used to show the encryption state of the file.
- question: Can users manually encrypt and decrypt files with PDE?
answer: |
Currently users can decrypt files manually but they can't encrypt files manually.
Currently users can decrypt files manually but they can't encrypt files manually. For information on how a user can manually decrypt a file, see the section **Disable PDE and decrypt files** in [Personal Data Encryption (PDE)](overview-pde.md).
- question: If a user signs into Windows with a password instead of Windows Hello for Business, will they be able to access their PDE encrypted files?
- question: If a user signs into Windows with a password instead of Windows Hello for Business, will they be able to access their PDE protected files?
answer: |
No. The keys used by PDE to decrypt files are protected by Windows Hello for Business credentials and will only be unlocked when signing on with Windows Hello for Business PIN or biometrics.
No. The keys used by PDE to protect files are protected by Windows Hello for Business credentials and will only be unlocked when signing on with Windows Hello for Business PIN or biometrics.
- question: What encryption method and strength does PDE use?
answer: |
PDE uses AES-CBC with a 256-bit key to encrypt files
PDE uses AES-CBC with a 256-bit key to encrypt files.
additionalContent: |
## See also

11
windows/security/information-protection/personal-data-encryption/includes/pde-description.md
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@ -4,24 +4,25 @@ description: Personal Data Encryption (PDE) description include file
author: frankroj
ms.author: frankroj
ms.reviewer: rafals
ms.reviewer: rhonnegowda
manager: aaroncz
ms.topic: how-to
ms.prod: windows-client
ms.technology: itpro-security
ms.localizationpriority: medium
ms.date: 09/22/2022
ms.date: 12/07/2022
---
<!-- Max 5963468 OS 32516487 -->
<!-- Max 6946251 -->
Personal data encryption (PDE) is a security feature introduced in Windows 11, version 22H2 that provides additional encryption features to Windows. PDE differs from BitLocker in that it encrypts individual files instead of whole volumes and disks. PDE occurs in addition to other encryption methods such as BitLocker.
PDE utilizes Windows Hello for Business to link data encryption keys with user credentials. This feature can minimize the number of credentials the user has to remember to gain access to files. For example, when using BitLocker with PIN, a user would need to authenticate twice - once with the BitLocker PIN and a second time with Windows credentials. This requirement requires users to remember two different credentials. With PDE, users only need to enter one set of credentials via Windows Hello for Business.
PDE is also accessibility friendly. For example, The BitLocker PIN entry screen doesn't have accessibility options. PDE however uses Windows Hello for Business, which does have accessibility features.
Because PDE utilizes Windows Hello for Business, PDE is also accessibility friendly due to the accessibility features available when using Windows Hello for Business.
Unlike BitLocker that releases data encryption keys at boot, PDE doesn't release data encryption keys until a user signs in using Windows Hello for Business. Users will only be able to access their PDE encrypted files once they've signed into Windows using Windows Hello for Business. Additionally, PDE has the ability to also discard the encryption keys when the device is locked.
Unlike BitLocker that releases data encryption keys at boot, PDE doesn't release data encryption keys until a user signs in using Windows Hello for Business. Users will only be able to access their PDE protected files once they've signed into Windows using Windows Hello for Business. Additionally, PDE has the ability to also discard the encryption keys when the device is locked.
> [!NOTE]
> PDE is currently only available to developers via [PDE APIs](/uwp/api/windows.security.dataprotection.userdataprotectionmanager). There is no user interface in Windows to either enable PDE or encrypt files via PDE. Also, although there is an MDM policy that can enable PDE, there are no MDM policies that can be used to encrypt files via PDE.
> PDE can be enabled using MDM policies. The files to be protected by PDE can be specified using [PDE APIs](/uwp/api/windows.security.dataprotection.userdataprotectionmanager). There is no user interface in Windows to either enable PDE or protect files using PDE.

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windows/security/information-protection/personal-data-encryption/overview-pde.md
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@ -3,75 +3,104 @@ title: Personal Data Encryption (PDE)
description: Personal Data Encryption unlocks user encrypted files at user sign-in instead of at boot.
author: frankroj
ms.author: frankroj
ms.reviewer: rafals
ms.reviewer: rhonnegowda
manager: aaroncz
ms.topic: how-to
ms.prod: windows-client
ms.technology: itpro-security
ms.localizationpriority: medium
ms.date: 09/22/2022
ms.date: 12/07/2022
---
<!-- Max 5963468 OS 32516487 -->
<!-- Max 6946251 -->
# Personal Data Encryption (PDE)
(*Applies to: Windows 11, version 22H2 and later Enterprise and Education editions*)
**Applies to:**
- Windows 11, version 22H2 and later Enterprise and Education editions
[!INCLUDE [Personal Data Encryption (PDE) description](includes/pde-description.md)]
## Prerequisites
### **Required**
- [Azure AD joined device](/azure/active-directory/devices/concept-azure-ad-join)
- [Windows Hello for Business](../../identity-protection/hello-for-business/hello-overview.md)
- Windows 11, version 22H2 and later Enterprise and Education editions
- [Azure AD joined device](/azure/active-directory/devices/concept-azure-ad-join)
- [Windows Hello for Business](../../identity-protection/hello-for-business/hello-overview.md)
- Windows 11, version 22H2 and later Enterprise and Education editions
### **Not supported with PDE**
- [FIDO/security key authentication](../../identity-protection/hello-for-business/microsoft-compatible-security-key.md)
- [Winlogon automatic restart sign-on (ARSO)](/windows-server/identity/ad-ds/manage/component-updates/winlogon-automatic-restart-sign-on--arso-)
- For information on disabling ARSO via Intune, see [Disable Winlogon automatic restart sign-on (ARSO)](configure-pde-in-intune.md#disable-winlogon-automatic-restart-sign-on-arso)).
- [Windows Information Protection (WIP)](../windows-information-protection/protect-enterprise-data-using-wip.md)
- [Hybrid Azure AD joined devices](/azure/active-directory/devices/concept-azure-ad-join-hybrid)
- Remote Desktop connections
- [FIDO/security key authentication](../../identity-protection/hello-for-business/microsoft-compatible-security-key.md)
- [Winlogon automatic restart sign-on (ARSO)](/windows-server/identity/ad-ds/manage/component-updates/winlogon-automatic-restart-sign-on--arso-)
- For information on disabling ARSO via Intune, see [Disable Winlogon automatic restart sign-on (ARSO)](configure-pde-in-intune.md#disable-winlogon-automatic-restart-sign-on-arso)).
- [Windows Information Protection (WIP)](../windows-information-protection/protect-enterprise-data-using-wip.md)
- [Hybrid Azure AD joined devices](/azure/active-directory/devices/concept-azure-ad-join-hybrid)
- Remote Desktop connections
### **Security hardening recommendations**
- [Kernel-mode crash dumps and live dumps disabled](/windows/client-management/mdm/policy-csp-memorydump#memorydump-policies)
Kernel-mode crash dumps and live dumps can potentially cause the keys used by PDE to protect files to be exposed. For greatest security, disable kernel-mode crash dumps and live dumps. For information on disabling crash dumps and live dumps via Intune, see [Disable kernel-mode crash dumps and live dumps](configure-pde-in-intune.md#disable-kernel-mode-crash-dumps-and-live-dumps).
- [Windows Error Reporting (WER) disabled/User-mode crash dumps disabled](/windows/client-management/mdm/policy-csp-errorreporting#errorreporting-disablewindowserrorreporting)
Disabling Windows Error Reporting prevents user-mode crash dumps. User-mode crash dumps can potentially cause the keys used by PDE to protect files to be exposed. For greatest security, disable user-mode crash dumps. For information on disabling crash dumbs via Intune, see [Disable Windows Error Reporting (WER)/Disable user-mode crash dumps](configure-pde-in-intune.md#disable-windows-error-reporting-werdisable-user-mode-crash-dumps).
- [Hibernation disabled](/windows/client-management/mdm/policy-csp-power#power-allowhibernate)
Hibernation files can potentially cause the keys used by PDE to protect files to be exposed. For greatest security, disable hibernation. For information on disabling crash dumbs via Intune, see [Disable hibernation](configure-pde-in-intune.md#disable-hibernation).
- [Disable allowing users to select when a password is required when resuming from connected standby](/windows/client-management/mdm/policy-csp-admx-credentialproviders#admx-credentialproviders-allowdomaindelaylock)
- When this policy is not configured on-premises Active Directory joined devices. However, this policy is enabled by default on Azure AD joined devices. For information on disabling this policy via Intune, see [Disable allowing users to select when a password is required when resuming from connected standby](configure-pde-in-intune.md#disable-allowing-users-to-select-when-a-password-is-required-when-resuming-from-connected-standby).
### **Highly recommended**
- [BitLocker Drive Encryption](../bitlocker/bitlocker-overview.md) enabled
- Although PDE will work without BitLocker, it's recommended to also enable BitLocker. PDE is meant to supplement BitLocker and not replace it.
- Backup solution such as [OneDrive](/onedrive/onedrive)
- In certain scenarios such as TPM resets or destructive PIN resets, the keys used by PDE to decrypt files can be lost. In such scenarios, any file encrypted with PDE will no longer be accessible. The only way to recover such files would be from backup.
- [Windows Hello for Business PIN reset service](../../identity-protection/hello-for-business/hello-feature-pin-reset.md)
- Destructive PIN resets will cause keys used by PDE to decrypt files to be lost. The destructive PIN reset will make any file encrypted with PDE no longer accessible after a destructive PIN reset. Files encrypted with PDE will need to be recovered from a backup after a destructive PIN reset. For this reason Windows Hello for Business PIN reset service is recommended since it provides non-destructive PIN resets.
- [Windows Hello Enhanced Sign-in Security](/windows-hardware/design/device-experiences/windows-hello-enhanced-sign-in-security)
- Provides additional security when authenticating with Windows Hello for Business via biometrics or PIN
- [Kernel and user mode crash dumps disabled](/windows/client-management/mdm/policy-csp-memorydump)
- Crash dumps can potentially cause the keys used by PDE decrypt files to be exposed. For greatest security, disable kernel and user mode crash dumps. For information on disabling crash dumbs via Intune, see [Disable crash dumps](configure-pde-in-intune.md#disable-crash-dumps).
- [Hibernation disabled](/windows/client-management/mdm/policy-csp-power#power-allowhibernate)
- Hibernation files can potentially cause the keys used by PDE to decrypt files to be exposed. For greatest security, disable hibernation. For information on disabling crash dumbs via Intune, see [Disable hibernation](configure-pde-in-intune.md#disable-hibernation).
- [BitLocker Drive Encryption](../bitlocker/bitlocker-overview.md) enabled
Although PDE will work without BitLocker, it's recommended to also enable BitLocker. PDE is meant to work alongside BitLocker for increased security. PDE isn't a replacement for BitLocker.
- Backup solution such as [OneDrive in Microsoft 365](/sharepoint/onedrive-overview)
In certain scenarios such as TPM resets or destructive PIN resets, the keys used by PDE to protect files will be lost. In such scenarios, any file protected with PDE will no longer be accessible. The only way to recover such files would be from backup.
- [Windows Hello for Business PIN reset service](../../identity-protection/hello-for-business/hello-feature-pin-reset.md)
Destructive PIN resets will cause keys used by PDE to protect files to be lost. The destructive PIN reset will make any file protected with PDE no longer accessible after a destructive PIN reset. Files protected with PDE will need to be recovered from a backup after a destructive PIN reset. For this reason Windows Hello for Business PIN reset service is recommended since it provides non-destructive PIN resets.
- [Windows Hello Enhanced Sign-in Security](/windows-hardware/design/device-experiences/windows-hello-enhanced-sign-in-security)
Provides additional security when authenticating with Windows Hello for Business via biometrics or PIN
## PDE protection levels
PDE uses AES-CBC with a 256-bit key to encrypt files and offers two levels of protection. The level of protection is determined based on the organizational needs. These levels can be set via the [PDE APIs](/uwp/api/windows.security.dataprotection.userdataprotectionmanager).
PDE uses AES-CBC with a 256-bit key to protect files and offers two levels of protection. The level of protection is determined based on the organizational needs. These levels can be set via the [PDE APIs](/uwp/api/windows.security.dataprotection.userdataprotectionmanager).
| Item | Level 1 | Level 2 |
|---|---|---|
| Data is accessible when user is signed in | Yes | Yes |
| Data is accessible when user has locked their device | Yes | No |
| Data is accessible after user signs out | No | No |
| Data is accessible when device is shut down | No | No |
| Decryption keys discarded | After user signs out | After user locks device or signs out |
| PDE protected data accessible when user has signed in via Windows Hello for Business | Yes | Yes |
| PDE protected data is accessible at Windows lock screen | Yes | Data is accessible for one minute after lock, then it's no longer available |
| PDE protected data is accessible after user signs out of Windows | No | No |
| PDE protected data is accessible when device is shut down | No | No |
| PDE protected data is accessible via UNC paths | No | No |
| PDE protected data is accessible when signing with Windows password instead of Windows Hello for Business | No | No |
| PDE protected data is accessible via Remote Desktop session | No | No |
| Decryption keys used by PDE discarded | After user signs out of Windows | One minute after Windows lock screen is engaged or after user signs out of Windows |
## PDE encrypted files accessibility
## PDE protected files accessibility
When a file is encrypted with PDE, its icon will show a padlock. If the user hasn't signed in locally with Windows Hello for Business or an unauthorized user attempts to access a PDE encrypted file, they'll be denied access to the file.
When a file is protected with PDE, its icon will show a padlock. If the user hasn't signed in locally with Windows Hello for Business or an unauthorized user attempts to access a PDE protected file, they'll be denied access to the file.
Scenarios where a user will be denied access to a PDE encrypted file include:
Scenarios where a user will be denied access to a PDE protected file include:
- User has signed into Windows via a password instead of signing in with Windows Hello for Business biometric or PIN.
- If specified via level 2 protection, when the device is locked.
- If protected via level 2 protection, when the device is locked.
- When trying to access files on the device remotely. For example, UNC network paths.
- Remote Desktop sessions.
- Other users on the device who aren't owners of the file, even if they're signed in via Windows Hello for Business and have permissions to navigate to the PDE encrypted files.
- Other users on the device who aren't owners of the file, even if they're signed in via Windows Hello for Business and have permissions to navigate to the PDE protected files.
## How to enable PDE
@ -85,55 +114,77 @@ To enable PDE on devices, push an MDM policy to the devices with the following p
There's also a [PDE CSP](/windows/client-management/mdm/personaldataencryption-csp) available for MDM solutions that support it.
> [!NOTE]
> Enabling the PDE policy on devices only enables the PDE feature. It does not encrypt any files. To encrypt files, use the [PDE APIs](/uwp/api/windows.security.dataprotection.userdataprotectionmanager) to create custom applications and scripts to specify which files to encrypt and at what level to encrypt the files. Additionally, files will not encrypt via the APIs until this policy has been enabled.
> Enabling the PDE policy on devices only enables the PDE feature. It does not protect any files. To protect files via PDE, use the [PDE APIs](/uwp/api/windows.security.dataprotection.userdataprotectionmanager). The PDE APIs can be used to create custom applications and scripts to specify which files to protect and at what level to protect the files. Additionally, the PDE APIs can't be used to protect files until the PDE policy has been enabled.
For information on enabling PDE via Intune, see [Enable Personal Data Encryption (PDE)](configure-pde-in-intune.md#enable-personal-data-encryption-pde).
## Differences between PDE and BitLocker
PDE is meant to work alongside BitLocker. PDE isn't a replacement for BitLocker, nor is BitLocker a replacement for PDE. Using both features together provides better security than using either BitLocker or PDE alone. However there are differences between BitLocker and PDE and how they work. This is why using them together offers better security.
| Item | PDE | BitLocker |
|--|--|--|
| Release of key | At user sign-in via Windows Hello for Business | At boot |
| Keys discarded | At user sign-out | At reboot |
| Files encrypted | Individual specified files | Entire volume/drive |
| Authentication to access encrypted file | Windows Hello for Business | When BitLocker with PIN is enabled, BitLocker PIN plus Windows sign in |
| Accessibility | Windows Hello for Business is accessibility friendly | BitLocker with PIN doesn't have accessibility features |
| Release of decryption key | At user sign-in via Windows Hello for Business | At boot |
| Decryption keys discarded | When user signs out of Windows or one minute after Windows lock screen is engaged | At reboot |
| Files protected | Individual specified files | Entire volume/drive |
| Authentication to access protected file | Windows Hello for Business | When BitLocker with TPM + PIN is enabled, BitLocker PIN plus Windows sign in |
## Differences between PDE and EFS
The main difference between encrypting files with PDE instead of EFS is the method they use to encrypt the file. PDE uses Windows Hello for Business to secure the keys to decrypt the files. EFS uses certificates to secure and encrypt the files.
The main difference between protecting files with PDE instead of EFS is the method they use to protect the file. PDE uses Windows Hello for Business to secure the keys that protect the files. EFS uses certificates to secure and protect the files.
To see if a file is encrypted with PDE or EFS:
To see if a file is protected with PDE or with EFS:
1. Open the properties of the file
2. Under the **General** tab, select **Advanced...**
3. In the **Advanced Attributes** windows, select **Details**
For PDE encrypted files, under **Protection status:** there will be an item listed as **Personal Data Encryption is:** and it will have the attribute of **On**.
For PDE protected files, under **Protection status:** there will be an item listed as **Personal Data Encryption is:** and it will have the attribute of **On**.
For EFS encrypted files, under **Users who can access this file:**, there will be a **Certificate thumbprint** next to the users with access to the file. There will also be a section at the bottom labeled **Recovery certificates for this file as defined by recovery policy:**.
For EFS protected files, under **Users who can access this file:**, there will be a **Certificate thumbprint** next to the users with access to the file. There will also be a section at the bottom labeled **Recovery certificates for this file as defined by recovery policy:**.
Encryption information including what encryption method is being used can be obtained with the command line `cipher.exe /c` command.
Encryption information including what encryption method is being used to protect the file can be obtained with the command line [`cipher.exe /c`](/windows-server/administration/windows-commands/cipher) command.
## Disable PDE and decrypt files
Currently there's no method to disable PDE via MDM policy. However, in certain scenarios PDE encrypted files can be decrypted using `cipher.exe` using the following steps:
Once PDE is enabled, it isn't recommended to disable it. However if PDE does need to be disabled, it can be done so via the MDM policy described in the section [How to enable PDE](#how-to-enable-pde). The value of the OMA-URI needs to be changed from **`1`** to **`0`** as follows:
- Name: **Personal Data Encryption**
- OMA-URI: **./User/Vendor/MSFT/PDE/EnablePersonalDataEncryption**
- Data type: **Integer**
- Value: **0**
Disabling PDE doesn't decrypt any PDE protected files. It only prevents the PDE API from being able to protect any additional files. PDE protected files can be manually decrypted using the following steps:
1. Open the properties of the file
2. Under the **General** tab, select **Advanced...**
3. Uncheck the option **Encrypt contents to secure data**
4. Select **OK**, and then **OK** again
> [!Important]
> Once a user selects to manually decrypt a file, they will not be able to manually encrypt the file again.
PDE protected files can also be decrypted using [`cipher.exe`](/windows-server/administration/windows-commands/cipher). Using `cipher.exe` can be helpful to decrypt files in the following scenarios:
- Decrypting a large number of files on a device
- Decrypting files on a large number of devices.
To decrypt files on a device using `cipher.exe`:
- Decrypt all files under a directory including subdirectories:<br>
`cipher.exe /d /s:*<path\_to\_directory>*`
- Decrypt a single file or all of the files in the specified directory, but not any subdirectories:<br>
`cipher.exe /d *<path\_to\_file\_or\_directory>*`
> [!IMPORTANT]
> Once a user selects to manually decrypt a file, the user will not be able to manually protect the file again using PDE.
## Windows out of box applications that support PDE
Certain Windows applications support PDE out of the box. If PDE is enabled on a device, these applications will utilize PDE.
- Mail
- Supports encrypting both email bodies and attachments
- Supports protecting both email bodies and attachments
## See also
- [Personal Data Encryption (PDE) FAQ](faq-pde.yml)
- [Configure Personal Data Encryption (PDE) polices in Intune](configure-pde-in-intune.md)