@ -19,37 +19,18 @@ You can enable [Bitlocker device encryption](https://docs.microsoft.com/windows/
## Enable device encryption using MDM
You can use your mobile device management (MDM) provider to apply a policy that requires device encryption. The policy used is the [Security/RequireDeviceEncryption setting](https://docs.microsoft.com/windows/client-management/mdm/policy-csp-security#security-requiredeviceencryption) in the Policy CSP.
You can use your mobile device management (MDM) provider to apply a policy that requires device encryption. The policy used is the [Security/RequireDeviceEncryption setting](https://docs.microsoft.com/windows/client-management/mdm/policy-csp-security#security-requiredeviceencryption) in the Policy CSP.)
In the following steps, Microsoft Intune is used as the example. For other MDM tools, see your MDM provider's documentation for instructions.
[See instructions for enabling device encryption using Microsoft Intune.](https://docs.microsoft.com/intune/compliance-policy-create-windows#windows-holographic-for-business)
1. Sign in to the [Microsoft Azure portal](https://portal.azure.com/).
For other MDM tools, see your MDM provider's documentation for instructions. If your MDM provider requires custom URI for device encryptionn, use the following configuration:
2. Use **Search** or go to **More services** to open the Intune blade.
3. Go to **Device configuration > Profiles**, and select **Create profile**.
@ -63,7 +63,7 @@ For each test, if functionality does not work as expected and the user clicks **
1. If the brightness successfully adjusts from 0-100 percent as expected, direct the user to click **Yes** and then click **Continue**.
2. If the brightness fails to adjust from 0-100 percent as expected, direct the user to click **No** and then click **Continue**.
3. Guide users through remaining tests as appropriate. When finished, SDT automatically provides a high-level summary of the report of the possible causes of any hardware issues along with guidance for resolution.
3. Guide users through remaining tests as appropriate. When finished, SDT automatically provides a high-level summary of the report, including the possible causes of any hardware issues along with guidance for resolution.
title: Advanced troubleshooting for Windows-based computer freeze issues
description: Learn how to troubleshoot computer freeze issues.
ms.prod: w10
ms.mktglfcycl:
ms.sitesec: library
ms.topic: troubleshooting
author: kaushika-msft
ms.localizationpriority: medium
ms.author: elizapo
ms.date: 11/26/2018
---
# Advanced troubleshooting for Windows-based computer freeze issues
This article describes how to troubleshoot freeze issues on Windows-based computers and servers. It also provides methods for collecting data that will help administrators or software developers diagnose, identify, and fix these issues.
> [!Note]
> The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.
## Identify the problem
* Which computer is freezing? (Example: The impacted computer is a physical server, virtual server, and so on.)
* What operation was being performed when the freezes occurred? (Example: This issue occurs when you shut down GUI, perform one or more operations, and so on.)
* How often do the errors occur? (Example: This issue occurs every night at 7 PM, every day around 7 AM, and so on.)
* On how many computers does this occur? (Example: All computers, only one computer, 10 computers, and so on.)
## Troubleshoot the freeze issues
To troubleshoot the freeze issues, check the current status of your computer, and follow one of the following methods.
### For the computer that's still running in a frozen state
If the physical computer or the virtual machine is still freezing, use one or more of the following methods for troubleshooting:
* Try to access the computer through Remote Desktop, Citrix, and so on.
* Use the domain account or local administrator account to log on the computer by using one of the Remote Physical Console Access features, such as Dell Remote Access Card (DRAC), HP Integrated Lights-Out (iLo), or IBM Remote supervisor adapter (RSA).
* Test ping to the computer. Packet dropping and high network latency may be observed.
* Press Ctrl + Alt + Delete command and check response.
* Try to use Remote Admin tools such as Computer Management, remote Server Manager, and Wmimgmt.msc.
### For the computer that is no longer frozen
If the physical computer or virtual machine froze but is now running in a good state, use one or more of the following methods for troubleshooting.
#### For a physical computer
* Review the System and Application logs from the computer that is having the issue. Check the event logs for the relevant Event ID:
- Application event log : Application Error (suggesting Crash or relevant System Process)
- System Event logs, Service Control Manager Error event IDs for Critical System Services
- Error Event IDs 2019/2020 with source Srv/Server
* Generate a System Diagnostics report by running the perfmon /report command.
#### For a virtual machine
* Review the System and Application logs from the computer that is having the issue.
* Generate a System Diagnostics report by running the perfmon /report command.
* Check history in virtual management monitoring tools.
## More Information
### Collect data for the freeze issues
To collect data for a server freeze, check the following table, and use one or more of the suggested methods.
|Computer type and state |Data collection method |
|-------------------------|--------------------|
|A physical computer that's running in a frozen state|[Use a memory dump file to collect data](#use-memory-dump-to-collect-data-for-the-physical-computer-thats-running-in-a-frozen-state). Or use method 2, 3, or 4. These methods are listed later in this section.|
|A physical computer that is no longer frozen|Use method 1, 2, 3, or 4. These methods are listed later in this section. And [use Pool Monitor to collect data](#use-pool-monitor-to-collect-data-for-the-physical-computer-that-is-no-longer-frozen).|
|A virtual machine that's running in a frozen state|Hyper-V or VMware: [Use a memory dump file to collect data for the virtual machine that's running in a frozen state](#use-memory-dump-to-collect-data-for-the-virtual-machine-thats-running-in-a-frozen-state). <br/> XenServer: Use method 1, 2, 3, or 4. These methods are listed later in this section.|
|A virtual machine that is no longer frozen|Use method 1, 2, 3, or 4. These methods are listed later in this section.|
#### Method 1: Memory dump
> [!Note]
> Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, [back up the registry for restoration](https://support.microsoft.com/help/322756) in case problems occur.
A complete memory dump file records all the contents of system memory when the computer stops unexpectedly. A complete memory dump file may contain data from processes that were running when the memory dump file was collected.
If the computer is no longer frozen and now is running in a good state, use the following steps to enable memory dump so that you can collect memory dump when the freeze issue occurs again. If the virtual machine is still running in a frozen state, use the following steps to enable and collect memory dump.
> [!Note]
> If you have a restart feature that is enabled on the computer, such as the Automatic System Restart (ASR) feature in Compaq computers, disable it. This setting is usually found in the BIOS. With this feature enabled, if the BIOS doesn't detect a heartbeat from the operating system, it will restart the computer. The restart can interrupt the dump process.
1. Make sure that the computer is set up to get a complete memory dump file. To do this, follow these steps:
1. Go to **Run** and enter `Sysdm.cpl`, and then press enter.
2. In **System Properties**, on the **Advanced** tab, select **Performance** \> **Settings** \> **Advanced**, and then check or change the virtual memory by clicking **Change**.
2. Go back to **System Properties** \> **Advanced** \> **Settings** in **Startup and Recovery**.
3. In the **Write Debugging Information** section, select **Complete Memory Dump**.
> [!Note]
> For Windows versions that are earlier than Windows 8 or Windows Server 2012, the Complete Memory Dump type isn't available in the GUI. You have to change it in Registry Editor. To do this, change the value of the following **CrashDumpEnabled** registry entry to **1** (REG_DWORD):
Additionally,youcanusetheworkaroundfor [space limitations on the system drive in Windows Server 2008](#space-limitations-on-the-system-drive-in-windows-server-2008).
> This is applicable only for Windows 7, Windows Server 2008 R2, and earlier versions of Windows. For Windows 8 Windows Server 2012, and later versions of Windows, the NMICrashDump registry key is no longer required, and an NMI interruption will result in [a Stop error that follows a memory dump data collection](https://support.microsoft.com/help/2750146).
Then, you can start or stop the log by running the following commands:
```cmd
logman start LOGNAME_Long / LOGNAME_Short
logman stop LOGNAME_Long / LOGNAME_Short
```
The Performance Monitor log is located in the path: C:\PERFLOGS
#### Method 4: Microsoft Support Diagnostics
1. In the search box of the [Microsoft Support Diagnostics Self-Help Portal](https://home.diagnostics.support.microsoft.com/selfhelp), type Windows Performance Diagnostic.
2. In the search results, select **Windows Performance Diagnostic**, and then click **Create**.
3. Follow the steps of the diagnostic.
### Additional methods to collect data
#### Use memory dump to collect data for the physical computer that's running in a frozen state
> [!Warning]
> Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, [back up the registry for restoration](https://support.microsoft.com/help/322756) in case problems occur.
If the physical computer is still running in a frozen state, follow these steps to enable and collect memory dump:
1. Make sure that the computer is set up to get a complete memory dump file and that you can access it through the network. To do this, follow these steps:
> [!Note]
> If it isn't possible to access the affected computer through the network, try to generate a memory dump file through NMI interruption. The result of the action may not collect a memory dump file if some of the following settings aren't qualified.
1. Try to access the desktop of the computer by any means.
> [!Note]
> In case accessing the operating system isn't possible, try to access Registry Editor on the computer remotely in order to check the type of memory dump file and page file with which the computer is currently configured.
2. From a remote computer that is preferably in the same network and subnet, go to **Registry Editor** \> **Connect Network Registry**. Then, connect to the concerned computer, and verify the following settings:
Learn [how to use Pool Monitor](https://support.microsoft.com/help/177415) andhowto [use the data to troubleshoot pool leaks](http://blogs.technet.com/b/markrussinovich/archive/2009/03/26/3211216.aspx).
#### Use memory dump to collect data for the virtual machine that's running in a frozen state
> This method is applicable only to Windows 8, Windows Server 2012, and later versions of Windows virtual machines. For the earlier versions of Windows, see methods 1 through 4 that are described earlier in this section.
##### VMware
YoucanuseVMwareSnapshotsorsuspendstateandextractamemorydumpfileequivalenttoacompletememorydumpfile.Byusing [Checkpoint To Core Tool (vmss2core)](https://labs.vmware.com/flings/vmss2core),youcanconvertbothsuspend(.vmss)andsnapshot(.vmsn)statefilestoadumpfileandthenanalyzethefilebyusingthestandardWindowsdebuggingtools.
Additionally,onWindowsServer2008ServicePack(SP2),there'sasecondoptionifthesystemdrivedoesn'thavesufficientspace.Namely,youcanusetheDedicatedDumpFileregistryentry.Tolearnhowtousetheregistryentry,see [New behavior in Windows Vista and Windows Server 2008](https://support.microsoft.com/help/969028).
Formoreinformation,see [How to use the DedicatedDumpFile registry value to overcome space limitations on the system drive](http://blogs.msdn.com/b/ntdebugging/archive/2010/04/02/how-to-use-the-dedicateddumpfile-registry-value-to-overcome-space-limitations-on-the-system-drive-when-capturing-a-system-memory-dump.aspx).
To determine if your device is enrolled in the [Long-Term Servicing Channel](https://docs.microsoft.com/windows/deployment/update/waas-overview#servicing-channels) (LTSC, formerly LTSB) or the [Semi-Annual Channel](https://docs.microsoft.com/windows/deployment/update/waas-overview#servicing-channels) (SAC) you'll need to know what version of Windows 10 you're running. There are a few ways to figure this out. Each method provides a different set of details, so it’s useful to learn about all of them.
## System Properties
Click **Start** > **Settings** > **Settings** > click **About** from the bottom of the left-hand menu
Click **Start** > **Settings** > **System** > click **About** from the bottom of the left-hand menu
You'll now see **Edition**, **Version**, and **OS Build** information. Something like this:
@ -26,7 +26,7 @@ This topic provides an overview of new solutions and online content related to d
## The Modern Desktop Deployment Center
The [Modern Destop Deployment Center](https://docs.microsoft.com/microsoft-365/enterprise/desktop-deployment-center-home) has launched with tons of content to help you with large-scale deployment of Windows 10 and Office 365 ProPlus.
The [Modern Desktop Deployment Center](https://docs.microsoft.com/microsoft-365/enterprise/desktop-deployment-center-home) has launched with tons of content to help you with large-scale deployment of Windows 10 and Office 365 ProPlus.
@ -71,7 +71,7 @@ The Windows 10 operating system introduces a new way to build, deploy, and servi
These improvements focus on maximizing customer involvement in Windows development, simplifying the deployment and servicing of Windows client computers, and leveling out the resources needed to deploy and maintain Windows over time.
- [Read more about Windows as a Service](/windows/deployment/update/waas-overview)
- [Read how much space does Windows 10 take](https://www.microsoft.com/en-us/windows/windows-10-specifications)
@ -234,4 +234,4 @@ Support in [Windows Defender Application Guard](#windows-defender-application-gu
[What's New in Windows 10](https://docs.microsoft.com/windows/whats-new/): See what’s new in other versions of Windows 10.<br>
[What's new in Windows 10, version 1709](https://docs.microsoft.com/windows-hardware/get-started/what-s-new-in-windows): See what’s new in Windows 10 hardware.<br>
[Windows 10 Fall Creators Update Next Generation Security](https://www.youtube.com/watch?v=JDGMNFwyUg8): YouTube video about Windows Defender ATP in Windows 10, version 1709.
[How to take a screenshot on pc without any app](https://rahulit.com/how-to-take-a-screenshot-on-a-dell-laptop/)
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