Windows Server Preview build 25246 now out for download with one known issue

vnext windows server

Microsoft has released a new build of the Windows Server Insider Preview. This month's build 25246 is now available to download as an ISO from the Windows Server Insider website along with a VHDX. It contains both the (Windows 11) Desktop Experience as well as a Server Core installation option for Datacenter and the Standard edition. As per usual, there's no changelog to speak of, so it's unclear what's new.

Branding has not yet been updated and remains as Windows Server 2022 in the preview. In addition, Microsoft is encouraging Insiders to give feedback in the Windows Server category and then the appropriate subcategory. The company asks to indicate the build number you are providing feedback on along with the title as shown in the example below:

[Server #####] Title of my feedback

This build does come with one known issue.

AppCompatFOD installation fails on Server Core post reboot with error message "Something didn't go as planned. No need to worry-undoing changes. Please keep your computer on." Workaround: DISM Add capability offline works.

dism /image: /add-capability /capabilityname:ServerCore.AppCompatibility~~~~0.0.1.0 /source: /limitaccess

See Server Core App Compatibility Feature on Demand (FOD) in Windows Server | Microsoft Learn for more information.

Available Downloads:

Windows Server VNext Preview in ISO format in 18 languages,
and in VHDX format in English only.

Windows Server VNext Preview VHDX

Microsoft Server Languages and Optional Features Preview

Windows Admin Center 2110.2 Preview

Keys are valid for preview builds only:

Server Standard: MFY9F-XBN2F-TYFMP-CCV49-RMYVH

Datacenter: 2KNJJ-33Y9H-2GXGX-KMQWH-G6H67

To download, registered Insiders can head over to the Windows Server Insider Preview download page here. You can also check out the Getting Started with Server page here on the Windows Insider for Business portal to register for the Windows Insider Program in case you aren't already registered.

Microsoft also notes that this Preview will expire on September 15, 2023.