29 KiB
title, description, ms.author, ms.localizationpriority, ms.topic, ms.prod, ms.technology, author, ms.date, ms.reviewer, manager
| title | description | ms.author | ms.localizationpriority | ms.topic | ms.prod | ms.technology | author | ms.date | ms.reviewer | manager |
|---|---|---|---|---|---|---|---|---|---|---|
| Policy CSP - ADMX_CredSsp | Policy CSP - ADMX_CredSsp | dansimp | medium | article | w10 | windows | manikadhiman | 11/12/2020 | dansimp |
Policy CSP - ADMX_CredSsp
Tip
This is an ADMX-backed policy and requires a special SyncML format to enable or disable. For details, see Understanding ADMX-backed policies.
You must specify the data type in the SyncML as <Format>chr</Format>. For an example SyncML, refer to Enabling a policy.
The payload of the SyncML must be XML-encoded; for this XML encoding, there are a variety of online encoders that you can use. To avoid encoding the payload, you can use CDATA if your MDM supports it. For more information, see CDATA Sections.
ADMX_CredSsp policies
- ADMX_CredSsp/AllowDefCredentialsWhenNTLMOnly
- ADMX_CredSsp/AllowDefaultCredentials
- ADMX_CredSsp/AllowEncryptionOracle
- ADMX_CredSsp/AllowFreshCredentials
- ADMX_CredSsp/AllowFreshCredentialsWhenNTLMOnly
- ADMX_CredSsp/AllowSavedCredentials
- ADMX_CredSsp/AllowSavedCredentialsWhenNTLMOnly
- ADMX_CredSsp/DenyDefaultCredentials
- ADMX_CredSsp/DenyFreshCredentials
- ADMX_CredSsp/DenySavedCredentials
- ADMX_CredSsp/RestrictedRemoteAdministration
ADMX_CredSsp/AllowDefCredentialsWhenNTLMOnly
| Edition | Windows 10 | Windows 11 |
|---|---|---|
| Home | No | No |
| Pro | No | No |
| Business | No | No |
| Enterprise | Yes | Yes |
| Education | Yes | Yes |
[!div class = "checklist"]
- Device
This policy setting applies to applications using the Cred SSP component (for example: Remote Desktop Connection).
This policy setting applies when server authentication was achieved via NTLM.
If you enable this policy setting, you can specify the servers to which the user's default credentials can be delegated (default credentials are those that you use when first logging on to Windows).
If you disable or do not configure (by default) this policy setting, delegation of default credentials is not permitted to any machine.
Note
The "Allow delegating default credentials with NTLM-only server authentication" policy setting can be set to one or more Service Principal Names (SPNs). The SPN represents the target server to which the user credentials can be delegated. The use of a single wildcard character is permitted when specifying the SPN.
For Example:
- TERMSRV/host.humanresources.fabrikam.com Remote Desktop Session Host running on host.humanresources.fabrikam.com machine
- TERMSRV/* Remote Desktop Session Host running on all machines.
- TERMSRV/*.humanresources.fabrikam.com Remote Desktop Session Host running on all machines in .humanresources.fabrikam.com
ADMX Info:
- GP Friendly name: Allow delegating default credentials with NTLM-only server authentication
- GP name: AllowDefCredentialsWhenNTLMOnly
- GP path: System\Credentials Delegation
- GP ADMX file name: CredSsp.admx
ADMX_CredSsp/AllowDefaultCredentials
| Edition | Windows 10 | Windows 11 |
|---|---|---|
| Home | No | No |
| Pro | No | No |
| Business | No | No |
| Enterprise | Yes | Yes |
| Education | Yes | Yes |
[!div class = "checklist"]
- Device
This policy setting applies to applications using the Cred SSP component (for example: Remote Desktop Connection).
This policy setting applies when server authentication was achieved by using a trusted X509 certificate or Kerberos.
If you enable this policy setting, you can specify the servers to which the user's default credentials can be delegated (default credentials are those that you use when first logging on to Windows).
The policy becomes effective the next time the user signs on to a computer running Windows.
If you disable or do not configure (by default) this policy setting, delegation of default credentials is not permitted to any computer. Applications depending upon this delegation behavior might fail authentication. For more information, see KB.
FWlink for KB: https://go.microsoft.com/fwlink/?LinkId=301508
Note
The "Allow delegating default credentials" policy setting can be set to one or more Service Principal Names (SPNs). The SPN represents the target server to which the user credentials can be delegated. The use of a single wildcard character is permitted when specifying the SPN.
For Example:
- TERMSRV/host.humanresources.fabrikam.com Remote Desktop Session Host running on host.humanresources.fabrikam.com machine
- TERMSRV/* Remote Desktop Session Host running on all machines.
- TERMSRV/*.humanresources.fabrikam.com Remote Desktop Session Host running on all machines in .humanresources.fabrikam.com
ADMX Info:
- GP Friendly name: Allow delegating default credentials
- GP name: AllowDefaultCredentials
- GP path: System\Credentials Delegation
- GP ADMX file name: CredSsp.admx
ADMX_CredSsp/AllowEncryptionOracle
| Edition | Windows 10 | Windows 11 |
|---|---|---|
| Home | No | No |
| Pro | No | No |
| Business | No | No |
| Enterprise | Yes | Yes |
| Education | Yes | Yes |
[!div class = "checklist"]
- Device
This policy setting applies to applications using the CredSSP component (for example: Remote Desktop Connection).
Some versions of the CredSSP protocol are vulnerable to an encryption oracle attack against the client. This policy controls compatibility with vulnerable clients and servers. This policy allows you to set the level of protection desired for the encryption oracle vulnerability.
If you enable this policy setting, CredSSP version support will be selected based on the following options:
-
Force Updated Clients: Client applications which use CredSSP will not be able to fall back to the insecure versions and services using CredSSP will not accept unpatched clients.
Note
This setting should not be deployed until all remote hosts support the newest version.
-
Mitigated: Client applications which use CredSSP will not be able to fall back to the insecure version but services using CredSSP will accept unpatched clients. See the link below for important information about the risk posed by remaining unpatched clients.
-
Vulnerable: Client applications which use CredSSP will expose the remote servers to attacks by supporting fall back to the insecure versions and services using CredSSP will accept unpatched clients.
For more information about the vulnerability and servicing requirements for protection, see https://go.microsoft.com/fwlink/?linkid=866660
ADMX Info:
- GP Friendly name: Encryption Oracle Remediation
- GP name: AllowEncryptionOracle
- GP path: System\Credentials Delegation
- GP ADMX file name: CredSsp.admx
ADMX_CredSsp/AllowFreshCredentials
| Edition | Windows 10 | Windows 11 |
|---|---|---|
| Home | No | No |
| Pro | No | No |
| Business | No | No |
| Enterprise | Yes | Yes |
| Education | Yes | Yes |
[!div class = "checklist"]
- Device
This policy setting applies to applications using the Cred SSP component (for example: Remote Desktop Connection).
This policy setting applies when server authentication was achieved via a trusted X509 certificate or Kerberos.
If you enable this policy setting, you can specify the servers to which the user's fresh credentials can be delegated (fresh credentials are those that you are prompted for when executing the application).
If you do not configure (by default) this policy setting, after proper mutual authentication, delegation of fresh credentials is permitted to Remote Desktop Session Host running on any machine (TERMSRV/*).
If you disable this policy setting, delegation of fresh credentials is not permitted to any machine.
Note
The "Allow delegating fresh credentials" policy setting can be set to one or more Service Principal Names (SPNs). The SPN represents the target server to which the user credentials can be delegated. The use of a single wildcard is permitted when specifying the SPN.
For Example:
- TERMSRV/host.humanresources.fabrikam.com Remote Desktop Session Host running on host.humanresources.fabrikam.com machine
- TERMSRV/* Remote Desktop Session Host running on all machines.
- TERMSRV/*.humanresources.fabrikam.com Remote Desktop Session Host running on all machines in .humanresources.fabrikam.com
ADMX Info:
- GP Friendly name: Allow delegating fresh credentials
- GP name: AllowFreshCredentials
- GP path: System\Credentials Delegation
- GP ADMX file name: CredSsp.admx
ADMX_CredSsp/AllowFreshCredentialsWhenNTLMOnly
| Edition | Windows 10 | Windows 11 |
|---|---|---|
| Home | No | No |
| Pro | No | No |
| Business | No | No |
| Enterprise | Yes | Yes |
| Education | Yes | Yes |
[!div class = "checklist"]
- Device
This policy setting applies to applications using the Cred SSP component (for example: Remote Desktop Connection).
This policy setting applies when server authentication was achieved via NTLM.
If you enable this policy setting, you can specify the servers to which the user's fresh credentials can be delegated (fresh credentials are those that you are prompted for when executing the application).
If you do not configure (by default) this policy setting, after proper mutual authentication, delegation of fresh credentials is permitted to Remote Desktop Session Host running on any machine (TERMSRV/*).
If you disable this policy setting, delegation of fresh credentials is not permitted to any machine.
Note
The "Allow delegating fresh credentials with NTLM-only server authentication" policy setting can be set to one or more Service Principal Names (SPNs). The SPN represents the target server to which the user credentials can be delegated. The use of a single wildcard character is permitted when specifying the SPN.
For Example:
- TERMSRV/host.humanresources.fabrikam.com Remote Desktop Session Host running on host.humanresources.fabrikam.com machine
- TERMSRV/* Remote Desktop Session Host running on all machines.
- TERMSRV/*.humanresources.fabrikam.com Remote Desktop Session Host running on all machines in humanresources.fabrikam.com
ADMX Info:
- GP Friendly name: Allow delegating fresh credentials with NTLM-only server authentication
- GP name: AllowFreshCredentialsWhenNTLMOnly
- GP path: System\Credentials Delegation
- GP ADMX file name: CredSsp.admx
ADMX_CredSsp/AllowSavedCredentials
| Edition | Windows 10 | Windows 11 |
|---|---|---|
| Home | No | No |
| Pro | No | No |
| Business | No | No |
| Enterprise | Yes | Yes |
| Education | Yes | Yes |
[!div class = "checklist"]
- Device
This policy setting applies to applications using the Cred SSP component (for example: Remote Desktop Connection).
This policy setting applies when server authentication was achieved via a trusted X509 certificate or Kerberos.
If you enable this policy setting, you can specify the servers to which the user's saved credentials can be delegated (saved credentials are those that you elect to save/remember using the Windows credential manager).
If you do not configure (by default) this policy setting, after proper mutual authentication, delegation of saved credentials is permitted to Remote Desktop Session Host running on any machine (TERMSRV/*).
If you disable this policy setting, delegation of saved credentials is not permitted to any machine.
Note
The "Allow delegating saved credentials" policy setting can be set to one or more Service Principal Names (SPNs). The SPN represents the target server to which the user credentials can be delegated. The use of a single wildcard character is permitted when specifying the SPN.
For Example:
- TERMSRV/host.humanresources.fabrikam.com Remote Desktop Session Host running on host.humanresources.fabrikam.com machine
- TERMSRV/* Remote Desktop Session Host running on all machines.
- TERMSRV/*.humanresources.fabrikam.com Remote Desktop Session Host running on all machines in humanresources.fabrikam.com
ADMX Info:
- GP Friendly name: Allow delegating saved credentials
- GP name: AllowSavedCredentials
- GP path: System\Credentials Delegation
- GP ADMX file name: CredSsp.admx
ADMX_CredSsp/AllowSavedCredentialsWhenNTLMOnly
| Edition | Windows 10 | Windows 11 |
|---|---|---|
| Home | No | No |
| Pro | No | No |
| Business | No | No |
| Enterprise | Yes | Yes |
| Education | Yes | Yes |
[!div class = "checklist"]
- Device
This policy setting applies to applications using the Cred SSP component (for example: Remote Desktop Connection).
This policy setting applies when server authentication was achieved via NTLM.
If you enable this policy setting, you can specify the servers to which the user's saved credentials can be delegated (saved credentials are those that you elect to save/remember using the Windows credential manager).
If you do not configure (by default) this policy setting, after proper mutual authentication, delegation of saved credentials is permitted to Remote Desktop Session Host running on any machine (TERMSRV/*) if the client machine is not a member of any domain. If the client is domain-joined, by default the delegation of saved credentials is not permitted to any machine.
If you disable this policy setting, delegation of saved credentials is not permitted to any machine.
Note
The "Allow delegating saved credentials with NTLM-only server authentication" policy setting can be set to one or more Service Principal Names (SPNs). The SPN represents the target server to which the user credentials can be delegated. The use of a single wildcard character is permitted when specifying the SPN.
For Example:
- TERMSRV/host.humanresources.fabrikam.com Remote Desktop Session Host running on host.humanresources.fabrikam.com machine
- TERMSRV/* Remote Desktop Session Host running on all machines.
- TERMSRV/*.humanresources.fabrikam.com Remote Desktop Session Host running on all machines in humanresources.fabrikam.com
ADMX Info:
- GP Friendly name: Allow delegating saved credentials with NTLM-only server authentication
- GP name: AllowSavedCredentialsWhenNTLMOnly
- GP path: System\Credentials Delegation
- GP ADMX file name: CredSsp.admx
ADMX_CredSsp/DenyDefaultCredentials
| Edition | Windows 10 | Windows 11 |
|---|---|---|
| Home | No | No |
| Pro | No | No |
| Business | No | No |
| Enterprise | Yes | Yes |
| Education | Yes | Yes |
[!div class = "checklist"]
- Device
This policy setting applies to applications using the Cred SSP component (for example: Remote Desktop Connection).
If you enable this policy setting, you can specify the servers to which the user's default credentials cannot be delegated (default credentials are those that you use when first logging on to Windows).
If you disable or do not configure (by default) this policy setting, this policy setting does not specify any server.
Note
The "Deny delegating default credentials" policy setting can be set to one or more Service Principal Names (SPNs). The SPN represents the target server to which the user credentials cannot be delegated. The use of a single wildcard character is permitted when specifying the SPN.
For Example:
- TERMSRV/host.humanresources.fabrikam.com Remote Desktop Session Host running on host.humanresources.fabrikam.com machine
- TERMSRV/* Remote Desktop Session Host running on all machines.
- TERMSRV/*.humanresources.fabrikam.com Remote Desktop Session Host running on all machines in .humanresources.fabrikam.com
This policy setting can be used in combination with the "Allow delegating default credentials" policy setting to define exceptions for specific servers that are otherwise permitted when using wildcard characters in the "Allow delegating default credentials" server list.
ADMX Info:
- GP Friendly name: Deny delegating default credentials
- GP name: DenyDefaultCredentials
- GP path: System\Credentials Delegation
- GP ADMX file name: CredSsp.admx
ADMX_CredSsp/DenyFreshCredentials
| Edition | Windows 10 | Windows 11 |
|---|---|---|
| Home | No | No |
| Pro | No | No |
| Business | No | No |
| Enterprise | Yes | Yes |
| Education | Yes | Yes |
[!div class = "checklist"]
- Device
This policy setting applies to applications using the Cred SSP component (for example: Remote Desktop Connection).
If you enable this policy setting, you can specify the servers to which the user's fresh credentials cannot be delegated (fresh credentials are those that you are prompted for when executing the application).
If you disable or do not configure (by default) this policy setting, this policy setting does not specify any server.
Note
The "Deny delegating fresh credentials" policy setting can be set to one or more Service Principal Names (SPNs). The SPN represents the target server to which the user credentials cannot be delegated. The use of a single wildcard character is permitted when specifying the SPN.
For Example:
- TERMSRV/host.humanresources.fabrikam.com Remote Desktop Session Host running on host.humanresources.fabrikam.com machine
- TERMSRV/* Remote Desktop Session Host running on all machines.
- TERMSRV/*.humanresources.fabrikam.com Remote Desktop Session Host running on all machines in .humanresources.fabrikam.com
This policy setting can be used in combination with the "Allow delegating fresh credentials" policy setting to define exceptions for specific servers that are otherwise permitted when using wildcard characters in the "Allow delegating fresh credentials" server list.
ADMX Info:
- GP Friendly name: Deny delegating fresh credentials
- GP name: DenyFreshCredentials
- GP path: System\Credentials Delegation
- GP ADMX file name: CredSsp.admx
ADMX_CredSsp/DenySavedCredentials
| Edition | Windows 10 | Windows 11 |
|---|---|---|
| Home | No | No |
| Pro | No | No |
| Business | No | No |
| Enterprise | Yes | Yes |
| Education | Yes | Yes |
[!div class = "checklist"]
- Device
This policy setting applies to applications using the Cred SSP component (for example: Remote Desktop Connection).
If you enable this policy setting, you can specify the servers to which the user's saved credentials cannot be delegated (saved credentials are those that you elect to save/remember using the Windows credential manager).
If you disable or do not configure (by default) this policy setting, this policy setting does not specify any server.
Note
The "Deny delegating saved credentials" policy setting can be set to one or more Service Principal Names (SPNs). The SPN represents the target server to which the user credentials cannot be delegated. The use of a single wildcard character is permitted when specifying the SPN.
For Example:
- TERMSRV/host.humanresources.fabrikam.com Remote Desktop Session Host running on host.humanresources.fabrikam.com machine
- TERMSRV/* Remote Desktop Session Host running on all machines.
- TERMSRV/*.humanresources.fabrikam.com Remote Desktop Session Host running on all machines in .humanresources.fabrikam.com
This policy setting can be used in combination with the "Allow delegating saved credentials" policy setting to define exceptions for specific servers that are otherwise permitted when using wildcard characters in the "Allow delegating saved credentials" server list.
ADMX Info:
- GP Friendly name: Deny delegating saved credentials
- GP name: DenySavedCredentials
- GP path: System\Credentials Delegation
- GP ADMX file name: CredSsp.admx
ADMX_CredSsp/RestrictedRemoteAdministration
| Edition | Windows 10 | Windows 11 |
|---|---|---|
| Home | No | No |
| Pro | No | No |
| Business | No | No |
| Enterprise | Yes | Yes |
| Education | Yes | Yes |
[!div class = "checklist"]
- Device
When running in Restricted Admin or Remote Credential Guard mode, participating apps do not expose signed in or supplied credentials to a remote host. Restricted Admin limits access to resources located on other servers or networks from the remote host because credentials are not delegated. Remote Credential Guard does not limit access to resources because it redirects all requests back to the client device.
Participating apps: Remote Desktop Client
If you enable this policy setting, the following options are supported:
- Restrict credential delegation: Participating applications must use Restricted Admin or Remote Credential Guard to connect to remote hosts.
- Require Remote Credential Guard: Participating applications must use Remote Credential Guard to connect to remote hosts.
- Require Restricted Admin: Participating applications must use Restricted Admin to connect to remote hosts.
If you disable or do not configure this policy setting, Restricted Admin and Remote Credential Guard mode are not enforced and participating apps can delegate credentials to remote devices.
Note
To disable most credential delegation, it may be sufficient to deny delegation in Credential Security Support Provider (CredSSP) by modifying Administrative template settings (located at Computer Configuration\Administrative Templates\System\Credentials Delegation).
On Windows 8.1 and Windows Server 2012 R2, enabling this policy will enforce Restricted Administration mode, regardless of the mode chosen. These versions do not support Remote Credential Guard.
ADMX Info:
- GP Friendly name: Restrict delegation of credentials to remote servers
- GP name: RestrictedRemoteAdministration
- GP path: System\Credentials Delegation
- GP ADMX file name: CredSsp.admx