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3
windows/deployment/upgrade/log-files.md
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@ -3,8 +3,9 @@ title: Log files and resolving upgrade errors
ms.reviewer:
manager: laurawi
ms.author: greglin
description: Learn how to interpret the log files generated during the Windows 10 upgrade process.
description: Learn how to interpret and analyze the log files that are generated during the Windows 10 upgrade process.
keywords: deploy, error, troubleshoot, windows, 10, upgrade, code, rollback, ITPro
ms.custom: seo-marvel-apr2020
ms.prod: w10
ms.mktglfcycl: deploy
ms.sitesec: library

3
windows/deployment/upgrade/quick-fixes.md
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@ -3,8 +3,9 @@ title: Quick fixes - Windows IT Pro
ms.reviewer:
manager: laurawi
ms.author: greglin
description: Learn how to quickly resolve many problems which may come up during a Windows 10 upgrade.
description: This article helps you learn how to quickly resolve many problems which may come up during a Windows 10 upgrade.
keywords: deploy, error, troubleshoot, windows, 10, upgrade, code, rollback, ITPro
ms.custom: seo-marvel-apr2020
ms.prod: w10
ms.mktglfcycl: deploy
ms.sitesec: library

130
windows/deployment/upgrade/resolve-windows-10-upgrade-errors.md
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@ -1,64 +1,66 @@
---
title: Resolve Windows 10 upgrade errors - Windows IT Pro
ms.reviewer:
manager: laurawi
ms.author: greglin
description: Resolve Windows 10 upgrade errors for ITPros. Technical information for IT professionals to help diagnose Windows setup errors.
keywords: deploy, error, troubleshoot, windows, 10, upgrade, code, rollback, ITPro
ms.prod: w10
ms.mktglfcycl: deploy
ms.sitesec: library
ms.pagetype: deploy
audience: itpro
author: greg-lindsay
ms.localizationpriority: medium
ms.topic: article
---
# Resolve Windows 10 upgrade errors : Technical information for IT Pros
**Applies to**
- Windows 10
>[!IMPORTANT]
>This article contains technical instructions for IT administrators. If you are not an IT administrator, try some of the [quick fixes](quick-fixes.md) described in this article then contact [Microsoft Support](https://support.microsoft.com/contactus/) starting with the Virtual Agent. To talk to a person about your issue, click **Get started** to interact with the Virtual Agent, then enter "Talk to a person" two times. The Virtual Agent can also help you to resolve many Windows upgrade issues. Also see: [Get help with Windows 10 upgrade and installation errors](https://support.microsoft.com/help/10587/windows-10-get-help-with-upgrade-installation-errors) and [Submit Windows 10 upgrade errors using Feedback Hub](submit-errors.md).
This article contains a brief introduction to Windows 10 installation processes, and provides resolution procedures that IT administrators can use to resolve issues with Windows 10 upgrade.
The article was originally one page, but has been divided into sub-topics of different technical levels. Basic level provides common procedures that can resolve several types of upgrade errors. Advanced level requires some experience with detailed troubleshooting methods.
The following four levels are assigned:
Level 100: Basic <br>
Level 200: Moderate <br>
Level 300: Moderate advanced <br>
Level 400: Advanced <br>
## In this guide
See the following topics in this article:
- [Quick fixes](quick-fixes.md): \Level 100\ Steps you can take to eliminate many Windows upgrade errors.<br>
- [SetupDiag](setupdiag.md): \Level 300\ SetupDiag is a new tool to help you isolate the root cause of an upgrade failure.
- [Troubleshooting upgrade errors](troubleshoot-upgrade-errors.md): \Level 300\ General advice and techniques for troubleshooting Windows 10 upgrade errors, and an explanation of phases used during the upgrade process.<br>
- [Windows Error Reporting](windows-error-reporting.md): \Level 300\ How to use Event Viewer to review details about a Windows 10 upgrade.
- [Upgrade error codes](upgrade-error-codes.md): \Level 400\ The components of an error code are explained.
- [Result codes](upgrade-error-codes.md#result-codes): Information about result codes.
- [Extend codes](upgrade-error-codes.md#extend-codes): Information about extend codes.
- [Log files](log-files.md): \Level 400\ A list and description of log files useful for troubleshooting.
- [Log entry structure](log-files.md#log-entry-structure): The format of a log entry is described.
- [Analyze log files](log-files.md#analyze-log-files): General procedures for log file analysis, and an example.
- [Resolution procedures](resolution-procedures.md): \Level 200\ Causes and mitigation procedures associated with specific error codes.
- [0xC1900101](resolution-procedures.md#0xc1900101): Information about the 0xC1900101 result code.
- [0x800xxxxx](resolution-procedures.md#0x800xxxxx): Information about result codes that start with 0x800.
- [Other result codes](resolution-procedures.md#other-result-codes): Additional causes and mitigation procedures are provided for some result codes.
- [Other error codes](resolution-procedures.md#other-error-codes): Additional causes and mitigation procedures are provided for some error codes.
- [Submit Windows 10 upgrade errors](submit-errors.md): \Level 100\ Submit upgrade errors to Microsoft for analysis.
## Related topics
[Windows 10 FAQ for IT professionals](https://technet.microsoft.com/windows/dn798755.aspx)
<br>[Windows 10 Enterprise system requirements](https://technet.microsoft.com/windows/dn798752.aspx)
<br>[Windows 10 Specifications](https://www.microsoft.com/windows/Windows-10-specifications)
<br>[Windows 10 IT pro forums](https://social.technet.microsoft.com/Forums/en-US/home?category=Windows10ITPro)
<br>[Fix Windows Update errors by using the DISM or System Update Readiness tool](https://support.microsoft.com/kb/947821)
---
title: Resolve Windows 10 upgrade errors - Windows IT Pro
ms.reviewer:
manager: laurawi
ms.author: greglin
description: This article contains technical instructions for IT administrators on how diagnose and resolve Windows 10 upgrade errors.
keywords: deploy, error, troubleshoot, windows, 10, upgrade, code, rollback, ITPro
ms.custom: seo-marvel-apr2020
ms.prod: w10
ms.mktglfcycl: deploy
ms.sitesec: library
ms.pagetype: deploy
audience: itpro
author: greg-lindsay
ms.localizationpriority: medium
ms.topic: article
---
# Resolve Windows 10 upgrade errors : Technical information for IT Pros
**Applies to**
- Windows 10
>[!IMPORTANT]
>This article contains technical instructions for IT administrators. If you are not an IT administrator, try some of the [quick fixes](quick-fixes.md) described in this article then contact [Microsoft Support](https://support.microsoft.com/contactus/) starting with the Virtual Agent. To talk to a person about your issue, click **Get started** to interact with the Virtual Agent, then enter "Talk to a person" two times. The Virtual Agent can also help you to resolve many Windows upgrade issues. Also see: [Get help with Windows 10 upgrade and installation errors](https://support.microsoft.com/help/10587/windows-10-get-help-with-upgrade-installation-errors) and [Submit Windows 10 upgrade errors using Feedback Hub](submit-errors.md).
This article contains a brief introduction to Windows 10 installation processes, and provides resolution procedures that IT administrators can use to resolve issues with Windows 10 upgrade.
The article was originally one page, but has been divided into sub-topics of different technical levels. Basic level provides common procedures that can resolve several types of upgrade errors. Advanced level requires some experience with detailed troubleshooting methods.
The following four levels are assigned:
Level 100: Basic <br>
Level 200: Moderate <br>
Level 300: Moderate advanced <br>
Level 400: Advanced <br>
## In this guide
See the following topics in this article:
- [Quick fixes](quick-fixes.md): \Level 100\ Steps you can take to eliminate many Windows upgrade errors.<br>
- [SetupDiag](setupdiag.md): \Level 300\ SetupDiag is a new tool to help you isolate the root cause of an upgrade failure.
- [Troubleshooting upgrade errors](troubleshoot-upgrade-errors.md): \Level 300\ General advice and techniques for troubleshooting Windows 10 upgrade errors, and an explanation of phases used during the upgrade process.<br>
- [Windows Error Reporting](windows-error-reporting.md): \Level 300\ How to use Event Viewer to review details about a Windows 10 upgrade.
- [Upgrade error codes](upgrade-error-codes.md): \Level 400\ The components of an error code are explained.
- [Result codes](upgrade-error-codes.md#result-codes): Information about result codes.
- [Extend codes](upgrade-error-codes.md#extend-codes): Information about extend codes.
- [Log files](log-files.md): \Level 400\ A list and description of log files useful for troubleshooting.
- [Log entry structure](log-files.md#log-entry-structure): The format of a log entry is described.
- [Analyze log files](log-files.md#analyze-log-files): General procedures for log file analysis, and an example.
- [Resolution procedures](resolution-procedures.md): \Level 200\ Causes and mitigation procedures associated with specific error codes.
- [0xC1900101](resolution-procedures.md#0xc1900101): Information about the 0xC1900101 result code.
- [0x800xxxxx](resolution-procedures.md#0x800xxxxx): Information about result codes that start with 0x800.
- [Other result codes](resolution-procedures.md#other-result-codes): Additional causes and mitigation procedures are provided for some result codes.
- [Other error codes](resolution-procedures.md#other-error-codes): Additional causes and mitigation procedures are provided for some error codes.
- [Submit Windows 10 upgrade errors](submit-errors.md): \Level 100\ Submit upgrade errors to Microsoft for analysis.
## Related topics
[Windows 10 FAQ for IT professionals](https://technet.microsoft.com/windows/dn798755.aspx)
<br>[Windows 10 Enterprise system requirements](https://technet.microsoft.com/windows/dn798752.aspx)
<br>[Windows 10 Specifications](https://www.microsoft.com/windows/Windows-10-specifications)
<br>[Windows 10 IT pro forums](https://social.technet.microsoft.com/Forums/en-US/home?category=Windows10ITPro)
<br>[Fix Windows Update errors by using the DISM or System Update Readiness tool](https://support.microsoft.com/kb/947821)
<br>

3
windows/deployment/upgrade/setupdiag.md
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@ -3,8 +3,9 @@ title: SetupDiag
ms.reviewer:
manager: laurawi
ms.author: greglin
description: How to use the SetupDiag tool to diagnose Windows Setup errors
description: In this article, you will learn about how to use the SetupDiag tool to diagnose Windows Setup errors.
keywords: deploy, troubleshoot, windows, 10, upgrade, update, setup, diagnose
ms.custom: seo-marvel-apr2020
ms.prod: w10
ms.mktglfcycl: deploy
ms.sitesec: library

154
windows/deployment/upgrade/submit-errors.md
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@ -1,76 +1,78 @@
---
title: Submit Windows 10 upgrade errors using Feedback Hub
ms.reviewer:
manager: laurawi
ms.author: greglin
description: Submit Windows 10 upgrade errors for diagnosis using feedback hub
keywords: deploy, error, troubleshoot, windows, 10, upgrade, code, rollback, feedback
ms.prod: w10
ms.mktglfcycl: deploy
ms.sitesec: library
ms.pagetype: deploy
audience: itpro
author: greg-lindsay
ms.localizationpriority: medium
ms.topic: article
---
# Submit Windows 10 upgrade errors using Feedback Hub
**Applies to**
- Windows 10
>[!NOTE]
>This is a 100 level topic (basic).<br>
>See [Resolve Windows 10 upgrade errors](resolve-windows-10-upgrade-errors.md) for a full list of topics in this article.
## In this topic
This topic describes how to submit problems with a Windows 10 upgrade to Microsoft using the Windows 10 Feedback Hub.
## About the Feedback Hub
The Feedback Hub app lets you tell Microsoft about any problems you run in to while using Windows 10 and send suggestions to help us improve your Windows experience. Previously, you could only use the Feedback Hub if you were in the Windows Insider Program. Now anyone can use this tool. You can download the Feedback Hub app from the Microsoft Store [here](https://www.microsoft.com/store/p/feedback-hub/9nblggh4r32n?SilentAuth=1&wa=wsignin1.0).
The Feedback Hub requires Windows 10 or Windows 10 mobile. If you are having problems upgrading from an older version of Windows to Windows 10, you can use the Feedback Hub to submit this information, but you must collect the log files from the legacy operating system and then attach these files to your feedback using a device that is running Windows 10. If you are upgrading to Windows 10 from a previous verion of Windows 10, the Feedback Hub will collect log files automatically.
## Submit feedback
To submit feedback about a failed Windows 10 upgrade, click the following link: [Feedback Hub](feedback-hub://?referrer=resolveUpgradeErrorsPage&tabid=2&contextid=81&newFeedback=true&feedbackType=2&topic=submit-errors.md) 
The Feedback Hub will open.
- Under **Tell us about it**, and then under **Summarize your issue**, type **Upgrade failing**.
- Under **Give us more detail**, provide additional information about the failed upgrade, such as:
- When did the failure occur?
- Were there any reboots?
- How many times did the system reboot?
- How did the upgrade fail?
- Were any error codes visible?
- Did the computer fail to a blue screen?
- Did the computer automatically roll back or did it hang, requiring you to power cycle it before it rolled back?
- Additional details
- What type of security software is installed?
- Is the computer up to date with latest drivers and firmware?
- Are there any external devices connected?
- If you used the link above, the category and subcategory will be automatically selected. If it is not selected, choose **Install and Update** and **Windows Installation**.
You can attach a screenshot or file if desired. This is optional, but can be extremely helpful when diagnosing your upgrade issue. The location of these files is described here: [Windows Setup log files and event logs](https://docs.microsoft.com/windows-hardware/manufacture/desktop/windows-setup-log-files-and-event-logs).
Click **Submit** to send your feedback.
See the following example:
![feedback example](../images/feedback.png)
After you click Submit, that's all you need to do. Microsoft will receive your feedback and begin analyzing the issue. You can check on your feedback periodically to see what solutions have been provided.
## Link to your feedback
After your feedback is submitted, you can email or post links to it by opening the Feedback Hub, clicking My feedback at the top, clicking the feedback item you submitted, clicking **Share**, then copying the short link that is displayed.
![share](../images/share.jpg)
## Related topics
[Windows 10 release information](https://technet.microsoft.com/windows/release-info.aspx)
---
title: Submit Windows 10 upgrade errors using Feedback Hub
ms.reviewer:
manager: laurawi
ms.author: greglin
description: This article describes, how to submit Windows 10 upgrade errors to Microsoft for diagnosis using the Windows 10 feedback hub.
keywords: deploy, error, troubleshoot, windows, 10, upgrade, code, rollback, feedback
ms.custom: seo-marvel-apr2020
ms.prod: w10
ms.mktglfcycl: deploy
ms.sitesec: library
ms.pagetype: deploy
audience: itpro
author: greg-lindsay
ms.localizationpriority: medium
ms.topic: article
---
# Submit Windows 10 upgrade errors using Feedback Hub
**Applies to**
- Windows 10
>[!NOTE]
>This is a 100 level topic (basic).<br>
>See [Resolve Windows 10 upgrade errors](resolve-windows-10-upgrade-errors.md) for a full list of topics in this article.
## In this topic
This topic describes how to submit problems with a Windows 10 upgrade to Microsoft using the Windows 10 Feedback Hub.
## About the Feedback Hub
The Feedback Hub app lets you tell Microsoft about any problems you run in to while using Windows 10 and send suggestions to help us improve your Windows experience. Previously, you could only use the Feedback Hub if you were in the Windows Insider Program. Now anyone can use this tool. You can download the Feedback Hub app from the Microsoft Store [here](https://www.microsoft.com/store/p/feedback-hub/9nblggh4r32n?SilentAuth=1&wa=wsignin1.0).
The Feedback Hub requires Windows 10 or Windows 10 mobile. If you are having problems upgrading from an older version of Windows to Windows 10, you can use the Feedback Hub to submit this information, but you must collect the log files from the legacy operating system and then attach these files to your feedback using a device that is running Windows 10. If you are upgrading to Windows 10 from a previous verion of Windows 10, the Feedback Hub will collect log files automatically.
## Submit feedback
To submit feedback about a failed Windows 10 upgrade, click the following link: [Feedback Hub](feedback-hub://?referrer=resolveUpgradeErrorsPage&tabid=2&contextid=81&newFeedback=true&feedbackType=2&topic=submit-errors.md) 
The Feedback Hub will open.
- Under **Tell us about it**, and then under **Summarize your issue**, type **Upgrade failing**.
- Under **Give us more detail**, provide additional information about the failed upgrade, such as:
- When did the failure occur?
- Were there any reboots?
- How many times did the system reboot?
- How did the upgrade fail?
- Were any error codes visible?
- Did the computer fail to a blue screen?
- Did the computer automatically roll back or did it hang, requiring you to power cycle it before it rolled back?
- Additional details
- What type of security software is installed?
- Is the computer up to date with latest drivers and firmware?
- Are there any external devices connected?
- If you used the link above, the category and subcategory will be automatically selected. If it is not selected, choose **Install and Update** and **Windows Installation**.
You can attach a screenshot or file if desired. This is optional, but can be extremely helpful when diagnosing your upgrade issue. The location of these files is described here: [Windows Setup log files and event logs](https://docs.microsoft.com/windows-hardware/manufacture/desktop/windows-setup-log-files-and-event-logs).
Click **Submit** to send your feedback.
See the following example:
![feedback example](../images/feedback.png)
After you click Submit, that's all you need to do. Microsoft will receive your feedback and begin analyzing the issue. You can check on your feedback periodically to see what solutions have been provided.
## Link to your feedback
After your feedback is submitted, you can email or post links to it by opening the Feedback Hub, clicking My feedback at the top, clicking the feedback item you submitted, clicking **Share**, then copying the short link that is displayed.
![share](../images/share.jpg)
## Related topics
[Windows 10 release information](https://technet.microsoft.com/windows/release-info.aspx)

160
windows/deployment/upgrade/windows-upgrade-and-migration-considerations.md
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@ -1,79 +1,81 @@
---
title: Windows Upgrade and Migration Considerations (Windows 10)
description: Windows Upgrade and Migration Considerations
ms.assetid: 7f85095c-5922-45e9-b28e-91b1263c7281
ms.reviewer:
manager: laurawi
ms.author: greglin
ms.prod: w10
ms.mktglfcycl: deploy
ms.sitesec: library
audience: itpro
author: greg-lindsay
ms.topic: article
---
# Windows upgrade and migration considerations
Files and application settings can be migrated to new hardware running the Windows® operating system, or they can be maintained during an operating system upgrade on the same computer. This topic summarizes the Microsoft® tools you can use to move files and settings between installations in addition to special considerations for performing an upgrade or migration.
## Upgrade from a previous version of Windows
You can upgrade from an earlier version of Windows, which means you can install the new version of Windows and retain your applications, files, and settings as they were in your previous version of Windows. If you decide to perform a custom installation of Windows instead of an upgrade, your applications and settings will not be maintained. Your personal files, and all Windows files and directories, will be moved to a Windows.old folder. You can access your data in the Windows.old folder after Windows Setup is complete.
## Migrate files and settings
Migration tools are available to transfer settings from one computer that is running Windows to another. These tools transfer only the program settings, not the programs themselves.
For more information about application compatibility, see the [Application Compatibility Toolkit (ACT)](https://go.microsoft.com/fwlink/p/?LinkId=131349).
The User State Migration Tool (USMT) 10.0 is an application intended for administrators who are performing large-scale automated deployments. For deployment to a small number of computers or for individually customized deployments, you can use Windows Easy Transfer.
### Migrate with Windows Easy Transfer
Windows Easy Transfer is a software wizard for transferring files and settings from one computer that is running Windows to another. It helps you select what to move to your new computer, enables you to set which migration method to use, and then performs the transfer. When the transfer has completed, Windows Easy Transfer Reports shows you what was transferred and provides a list of programs you might want to install on your new computer, in addition to links to other programs you might want to download.
With Windows Easy Transfer, files and settings can be transferred using a network share, a USB flash drive (UFD), or the Easy Transfer cable. However, you cannot use a regular universal serial bus (USB) cable to transfer files and settings with Windows Easy Transfer. An Easy Transfer cable can be purchased on the Web, from your computer manufacturer, or at an electronics store.
> [!NOTE]
> Windows Easy Transfer [is not available in Windows 10](https://support.microsoft.com/help/4026265/windows-windows-easy-transfer-is-not-available-in-windows-10).
### Migrate with the User State Migration Tool
You can use USMT to automate migration during large deployments of the Windows operating system. USMT uses configurable migration rule (.xml) files to control exactly which user accounts, user files, operating system settings, and application settings are migrated and how they are migrated. You can use USMT for both *side-by-side* migrations, where one piece of hardware is being replaced, or *wipe-and-load* (or *refresh*) migrations, when only the operating system is being upgraded.
## Upgrade and migration considerations
Whether you are upgrading or migrating to a new version of Windows, you must be aware of the following issues and considerations:
### Application compatibility
For more information about application compatibility in Windows, see [Use Upgrade Readiness to manage Windows upgrades](https://docs.microsoft.com/windows/deployment/upgrade/use-upgrade-readiness-to-manage-windows-upgrades).
### Multilingual Windows image upgrades
When performing multilingual Windows upgrades, cross-language upgrades are not supported by USMT. If you are upgrading or migrating an operating system with multiple language packs installed, you can upgrade or migrate only to the system default user interface (UI) language. For example, if English is the default but you have a Spanish language pack installed, you can upgrade or migrate only to English.
If you are using a single-language Windows image that matches the system default UI language of your multilingual operating system, the migration will work. However, all of the language packs will be removed, and you will have to reinstall them after the upgrade is completed.
### Errorhandler.cmd
When upgrading from an earlier version of Windows, if you intend to use Errorhandler.cmd, you must copy this file into the %WINDIR%\\Setup\\Scripts directory on the old installation. This makes sure that if there are errors during the down-level phase of Windows Setup, the commands in Errorhandler.cmd will run.
### Data drive ACL migration
During the configuration pass of Windows Setup, the root access control list (ACL) on drives formatted for NTFS that do not appear to have an operating system will be changed to the default Windows XP ACL format. The ACLs on these drives are changed to enable authenticated users to modify access on folders and files.
Changing the ACLs may affect the performance of Windows Setup if the default Windows XP ACLs are applied to a partition with a large amount of data. Because of these performance concerns, you can change the following registry value to disable this feature:
``` syntax
Key: HKLM\System\Setup
Type: REG_DWORD
Value: "DDACLSys_Disabled" = 1
```
This feature is disabled if this registry key value exists and is configured to `1`.
## Related topics
[User State Migration Tool (USMT) Overview Topics](../usmt/usmt-topics.md)<BR>
[Windows 10 upgrade paths](windows-10-upgrade-paths.md)<BR>
[Windows 10 edition upgrade](windows-10-edition-upgrades.md)
 
 
---
title: Windows Upgrade and Migration Considerations (Windows 10)
description: This article will guide you about things to consider before you make a Windows Upgrade or Migration.
ms.custom: seo-marvel-apr2020
ms.assetid: 7f85095c-5922-45e9-b28e-91b1263c7281
ms.reviewer:
manager: laurawi
ms.author: greglin
ms.prod: w10
ms.mktglfcycl: deploy
ms.sitesec: library
audience: itpro
author: greg-lindsay
ms.topic: article
---
# Windows upgrade and migration considerations
Files and application settings can be migrated to new hardware running the Windows® operating system, or they can be maintained during an operating system upgrade on the same computer. This topic summarizes the Microsoft® tools you can use to move files and settings between installations in addition to special considerations for performing an upgrade or migration.
## Upgrade from a previous version of Windows
You can upgrade from an earlier version of Windows, which means you can install the new version of Windows and retain your applications, files, and settings as they were in your previous version of Windows. If you decide to perform a custom installation of Windows instead of an upgrade, your applications and settings will not be maintained. Your personal files, and all Windows files and directories, will be moved to a Windows.old folder. You can access your data in the Windows.old folder after Windows Setup is complete.
## Migrate files and settings
Migration tools are available to transfer settings from one computer that is running Windows to another. These tools transfer only the program settings, not the programs themselves.
For more information about application compatibility, see the [Application Compatibility Toolkit (ACT)](https://go.microsoft.com/fwlink/p/?LinkId=131349).
The User State Migration Tool (USMT) 10.0 is an application intended for administrators who are performing large-scale automated deployments. For deployment to a small number of computers or for individually customized deployments, you can use Windows Easy Transfer.
### Migrate with Windows Easy Transfer
Windows Easy Transfer is a software wizard for transferring files and settings from one computer that is running Windows to another. It helps you select what to move to your new computer, enables you to set which migration method to use, and then performs the transfer. When the transfer has completed, Windows Easy Transfer Reports shows you what was transferred and provides a list of programs you might want to install on your new computer, in addition to links to other programs you might want to download.
With Windows Easy Transfer, files and settings can be transferred using a network share, a USB flash drive (UFD), or the Easy Transfer cable. However, you cannot use a regular universal serial bus (USB) cable to transfer files and settings with Windows Easy Transfer. An Easy Transfer cable can be purchased on the Web, from your computer manufacturer, or at an electronics store.
> [!NOTE]
> Windows Easy Transfer [is not available in Windows 10](https://support.microsoft.com/help/4026265/windows-windows-easy-transfer-is-not-available-in-windows-10).
### Migrate with the User State Migration Tool
You can use USMT to automate migration during large deployments of the Windows operating system. USMT uses configurable migration rule (.xml) files to control exactly which user accounts, user files, operating system settings, and application settings are migrated and how they are migrated. You can use USMT for both *side-by-side* migrations, where one piece of hardware is being replaced, or *wipe-and-load* (or *refresh*) migrations, when only the operating system is being upgraded.
## Upgrade and migration considerations
Whether you are upgrading or migrating to a new version of Windows, you must be aware of the following issues and considerations:
### Application compatibility
For more information about application compatibility in Windows, see [Use Upgrade Readiness to manage Windows upgrades](https://docs.microsoft.com/windows/deployment/upgrade/use-upgrade-readiness-to-manage-windows-upgrades).
### Multilingual Windows image upgrades
When performing multilingual Windows upgrades, cross-language upgrades are not supported by USMT. If you are upgrading or migrating an operating system with multiple language packs installed, you can upgrade or migrate only to the system default user interface (UI) language. For example, if English is the default but you have a Spanish language pack installed, you can upgrade or migrate only to English.
If you are using a single-language Windows image that matches the system default UI language of your multilingual operating system, the migration will work. However, all of the language packs will be removed, and you will have to reinstall them after the upgrade is completed.
### Errorhandler.cmd
When upgrading from an earlier version of Windows, if you intend to use Errorhandler.cmd, you must copy this file into the %WINDIR%\\Setup\\Scripts directory on the old installation. This makes sure that if there are errors during the down-level phase of Windows Setup, the commands in Errorhandler.cmd will run.
### Data drive ACL migration
During the configuration pass of Windows Setup, the root access control list (ACL) on drives formatted for NTFS that do not appear to have an operating system will be changed to the default Windows XP ACL format. The ACLs on these drives are changed to enable authenticated users to modify access on folders and files.
Changing the ACLs may affect the performance of Windows Setup if the default Windows XP ACLs are applied to a partition with a large amount of data. Because of these performance concerns, you can change the following registry value to disable this feature:
``` syntax
Key: HKLM\System\Setup
Type: REG_DWORD
Value: "DDACLSys_Disabled" = 1
```
This feature is disabled if this registry key value exists and is configured to `1`.
## Related topics
[User State Migration Tool (USMT) Overview Topics](../usmt/usmt-topics.md)<BR>
[Windows 10 upgrade paths](windows-10-upgrade-paths.md)<BR>
[Windows 10 edition upgrade](windows-10-edition-upgrades.md)