UPDATE 10/11:
Hello Windows Server Insiders!
Today we are pleased to release a new build of the next Windows Server Long-Term Servicing Channel (LTSC) Preview that contains both the Desktop Experience and Server Core installation options for Datacenter and Standard editions, Annual Channel for Container Host and Azure Edition (for VM evaluation only). Branding has been updated for the upcoming release, Windows Server 2025, in this preview - when reporting issues please refer to Windows Server 2025 preview. If you signed up for Server Flighting, you should receive this new build automatically.
What's New
Windows Admin Center (WAC)
Beginning with build 26252, Windows Server 2025 preview customers can download and install Windows Admin Center right from the Windows Server Desktop using the in-OS app that takes care of downloading and guides you through the installation process.
Note: You must be running a desktop version of Windows Server 2025 Datacenter or Standard preview to access this feature.
Windows Server Flighting is here!!
If you signed up for Server Flighting, you should receive this new build automatically later today.
For more information, see Welcome to Windows Insider flighting on Windows Server - Microsoft Community Hub
The new Feedback Hub app is now available for Server Desktop users! The app should automatically update with the latest version, but if it does not, simply Check for updates in the app’s settings tab.
Known Issues
Sysprep unable to generalize images. There is a known issue in build 26280.5000 that prevents images from being generalized via sysprep. The issue is understood and will be fixed in a future release.
Download Windows Server Insider Preview (microsoft.com)
Flighting: The label for this flight may incorrectly reference Windows 11. However, when selected, the package installed is the Windows Server update. Please ignore the label and proceed with installing your flight. This issue will be addressed in a future release.
WinPE - Powershell Scripts: Applying the WinPE-Powershell optional component does not properly install Powershell in WinPE. As a result, Powershell cmdlets will fail. Customers who are dependent on Powershell in WinPE should not use this build.
If you are validating upgrades from Windows Server 2019 or 2022, we do not recommend that you use this build as intermittent upgrade failures have been identified for this build.
This build has an issue where archiving eventlogs with "wevetutil al" command causes the Windows Event Log service to crash, and the archive operation to fail. The service must be restarted by executing "Start-Service EventLog" from an administrative command line prompt.
If you have Secure Launch/DRTM code path enabled, we do not recommend that you install this build.
Available Downloads
Downloads to certain countries may not be available. See Microsoft suspends new sales in Russia - Microsoft On the Issues.
Expiration: This Windows Server Preview will expire September 15, 2025.
How to Download
Registered Insiders may navigate directly to the Windows Server Insider Preview download page. If you have not yet registered as an Insider, see GETTING STARTED WITH SERVER on the Windows Insiders for Business portal.
We value your feedback!
The most important part of the release cycle is to hear what's working and what needs to be improved, so your feedback is extremely valued. Beginning with Insider build 26063, please use the new Feedback Hub app for Windows Server if you are running a Desktop version of Server. If you are using a Core edition, or if you are unable to use the Feedback Hub app, you can use your registered Windows 10 or Windows 11 Insider device and use the Feedback Hub application. In the app, choose the Windows Server category and then the appropriate subcategory for your feedback. In the title of the Feedback, please indicate the build number you are providing feedback on as shown below to ensure that your issue is attributed to the right version:
[Server #####] Title of my feedback
See Give Feedback on Windows Server via Feedback Hub for specifics. The Windows Server Insiders space on the Microsoft Tech Communities supports preview builds of the next version of Windows Server. Use the forum to collaborate, share and learn from experts. For versions that have been released to general availability in market, try the Windows Server for IT Pro forum or contact Support for Business.
Diagnostic and Usage Information
Microsoft collects this information over the internet to help keep Windows secure and up to date, troubleshoot problems, and make product improvements. Microsoft server operating systems can be configured to turn diagnostic data off, send Required diagnostic data, or send Optional diagnostic data. During previews, Microsoft asks that you change the default setting to Optional to provide the best automatic feedback and help us improve the final product.
Administrators can change the level of information collection through Settings. For details, see Configure Windows diagnostic data in your organization (Windows 10 and Windows 11) - Windows Privacy. Also see the Microsoft Privacy Statement.
Terms of Use
This is pre-release software - it is provided for use "as-is" and is not supported in production environments. Users are responsible for installing any updates that may be made available from Windows Update. All pre-release software made available to you via the Windows Server Insider program is governed by the Insider Terms of Use.
Check Windows Updates
ISO from Microsoft:
UUP Dump:
64-bit ISO download:
ARM64 ISO download:
New Windows Server 2025 LTSC Preview Build 26304.5000 - Oct. 11
Windows Blogs: Hello Windows Server Insiders! Today we are pleased to release a new build of the next Windows Server Long-Term Servicing Channel (LTSC) Preview that contains both the Desktop Experience and Server Core installation options for Datacenter and Standard editions, Annual Channel for...
www.elevenforum.com
Windows Server Insiders Blog:
Hello Windows Server Insiders!
Today we are pleased to release a new build of the next Windows Server Long-Term Servicing Channel (LTSC) Preview that contains both the Desktop Experience and Server Core installation options for Datacenter and Standard editions, Annual Channel for Container Host and Azure Edition (for VM evaluation only). Branding has been updated for the upcoming release, Windows Server 2025, in this preview - when reporting issues please refer to Windows Server 2025 preview. If you signed up for Server Flighting, you should receive this new build automatically.
What's New
Windows Admin Center (WAC)
Beginning with build 26252, Windows Server 2025 preview customers can download and install Windows Admin Center right from the Windows Server Desktop using the in-OS app that takes care of downloading and guides you through the installation process.
Note: You must be running a desktop version of Windows Server 2025 Datacenter or Standard preview to access this feature.
Windows Server Flighting is here!!
If you signed up for Server Flighting, you should receive this new build automatically later today.
For more information, see Welcome to Windows Insider flighting on Windows Server - Microsoft Community Hub
The new Feedback Hub app is now available for Server Desktop users! The app should automatically update with the latest version, but if it does not, simply Check for updates in the app’s settings tab.
Known Issues
Sysprep unable to generalize images. There is a known issue in build 26280.5000 that prevents images from being generalized via sysprep. The issue is understood and will be fixed in a future release.
Download Windows Server Insider Preview (microsoft.com)
Flighting: The label for this flight may incorrectly reference Windows 11. However, when selected, the package installed is the Windows Server update. Please ignore the label and proceed with installing your flight. This issue will be addressed in a future release.
WinPE - Powershell Scripts: Applying the WinPE-Powershell optional component does not properly install Powershell in WinPE. As a result, Powershell cmdlets will fail. Customers who are dependent on Powershell in WinPE should not use this build.
If you are validating upgrades from Windows Server 2019 or 2022, we do not recommend that you use this build as intermittent upgrade failures have been identified for this build.
This build has an issue where archiving eventlogs with "wevetutil al" command causes the Windows Event Log service to crash, and the archive operation to fail. The service must be restarted by executing "Start-Service EventLog" from an administrative command line prompt.
If you have Secure Launch/DRTM code path enabled, we do not recommend that you install this build.
Available Downloads
Downloads to certain countries may not be available. See Microsoft suspends new sales in Russia - Microsoft On the Issues.
- Windows Server Long-Term Servicing Channel Preview in ISO format in 18 languages, and in VHDX format in English only.
- Windows Server Datacenter Azure Edition Preview in ISO and VHDX format, English only.
- Microsoft Server Languages and Optional Features Preview
- Server Standard: MFY9F-XBN2F-TYFMP-CCV49-RMYVH
- Datacenter: 2KNJJ-33Y9H-2GXGX-KMQWH-G6H67
- Azure Edition does not accept a key
Expiration: This Windows Server Preview will expire September 15, 2025.
How to Download
Registered Insiders may navigate directly to the Windows Server Insider Preview download page. If you have not yet registered as an Insider, see GETTING STARTED WITH SERVER on the Windows Insiders for Business portal.
We value your feedback!
The most important part of the release cycle is to hear what's working and what needs to be improved, so your feedback is extremely valued. Beginning with Insider build 26063, please use the new Feedback Hub app for Windows Server if you are running a Desktop version of Server. If you are using a Core edition, or if you are unable to use the Feedback Hub app, you can use your registered Windows 10 or Windows 11 Insider device and use the Feedback Hub application. In the app, choose the Windows Server category and then the appropriate subcategory for your feedback. In the title of the Feedback, please indicate the build number you are providing feedback on as shown below to ensure that your issue is attributed to the right version:
[Server #####] Title of my feedback
See Give Feedback on Windows Server via Feedback Hub for specifics. The Windows Server Insiders space on the Microsoft Tech Communities supports preview builds of the next version of Windows Server. Use the forum to collaborate, share and learn from experts. For versions that have been released to general availability in market, try the Windows Server for IT Pro forum or contact Support for Business.
Diagnostic and Usage Information
Microsoft collects this information over the internet to help keep Windows secure and up to date, troubleshoot problems, and make product improvements. Microsoft server operating systems can be configured to turn diagnostic data off, send Required diagnostic data, or send Optional diagnostic data. During previews, Microsoft asks that you change the default setting to Optional to provide the best automatic feedback and help us improve the final product.
Administrators can change the level of information collection through Settings. For details, see Configure Windows diagnostic data in your organization (Windows 10 and Windows 11) - Windows Privacy. Also see the Microsoft Privacy Statement.
Terms of Use
This is pre-release software - it is provided for use "as-is" and is not supported in production environments. Users are responsible for installing any updates that may be made available from Windows Update. All pre-release software made available to you via the Windows Server Insider program is governed by the Insider Terms of Use.
Source:
Announcing Windows Server Preview Build 26296
Announcing Windows Server Preview Build 26296 Hello Windows Server Insiders! Today we are pleased to release a new build of the next Windows Server Long-Term..
techcommunity.microsoft.com
Check Windows Updates
ISO from Microsoft:
Download Official Windows 11 ISO file from Microsoft Tutorial
This tutorial will show you how to download an official Windows Server or Windows 11 64-bit or ARM64 ISO file from Microsoft. Microsoft provides ISO files for Windows Server and Windows 11 to download. You can use these ISO files to clean install or in-place upgrade Windows 11. The Flight Hub...
www.elevenforum.com
UUP Dump:
64-bit ISO download:
Select language for Windows Server Insider Preview 26296.5001 (ge_prerelease) amd64
Select language for Windows Server Insider Preview 26296.5001 (ge_prerelease) amd64 on UUP dump. UUP dump lets you download Unified Update Platform files, like Windows Insider updates, directly from Windows Update.
uupdump.net
ARM64 ISO download:
Select language for Windows Server Insider Preview 26296.5001 (ge_prerelease) arm64
Select language for Windows Server Insider Preview 26296.5001 (ge_prerelease) arm64 on UUP dump. UUP dump lets you download Unified Update Platform files, like Windows Insider updates, directly from Windows Update.
uupdump.net
UUP Dump - Download Windows Insider ISO
UUP Dump is the most practical and easy way to get ISO images of any Insider Windows 10 or Windows 11 version, as soon as Microsoft has released a new build. UUP Dump creates a download configuration file according to your choices, downloads necessary files directly from Microsoft servers, and...
www.elevenforum.com
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