Microsoft says that some WSUS servers upgraded to Home windows Server 2022 may fail to push Home windows 11, model 22H2 updates launched throughout this month’s Patch Tuesday to endpoints throughout enterprise environments.

This recognized subject solely impacts WSUS servers upgraded from Home windows Server 2016 or Home windows Server 2019.

Microsoft Configuration Supervisor (a part of the Microsoft Endpoint Supervisor) isn’t affected by this subject.

“The updates will obtain to the WSUS server however won’t propagate additional to shopper gadgets. Affected WSUS servers are solely these working Home windows Server 2022 which have been upgraded from Home windows Server 2016 or Home windows Server 2019,” Microsoft mentioned.

As Redmond additional explains, these issues consequence from .msu and .wim MIME varieties being by chance eliminated in the course of the improve course of to Home windows Server 2022.

“This subject is attributable to the unintended removing of required Unified Replace Platform (UUP) MIME varieties in the course of the improve to Home windows Server 2022 from a earlier model of Home windows Server,” the corporate added.

“This subject may have an effect on safety updates or function updates for Home windows 11, model 22H2.”

Microsoft is engaged on a repair for this recognized subject and can present extra info with a future replace.

How you can repair affected WSUS servers

Till a repair is obtainable, Microsoft offers admins with impacted WSUS servers a brief repair requiring them to re-add the inadvertently eliminated UUP MIME varieties.

The process for re-adding these Unified Replace Platform file varieties manually requires admins to undergo these steps:

• In your Home windows Server set up, open Server Supervisor.
• Choose Web Info Companies (IIS) within the left column.
• Proper-click in your server within the checklist of servers.
• Choose Web Info Companies (IIS) Supervisor.
• Choose your server from the connections checklist on the left aspect of the window that opens.
• Within the middle pane, scroll down and double-click MIME Varieties.
• On the precise, choose Add.
• Create a MIME Sort with the extension “.wim” and the MIME Sort “software/x-ms-wim.”
• Choose Add once more.
• Create a MIME Sort with the extension “.msu” and the MIME Sort “software/octet-stream.” See the next picture.

Admins may also add the lacking file extensions utilizing the next PowerShell instructions (every line might be chosen with a double-click):

& $Env:WinDirsystem32inetsrvappcmd.exe set config /part:staticContent /+"[fileExtension='.msu',mimeType="application/octet-stream"]"
& $Env:WinDirsystem32inetsrvappcmd.exe set config /part:staticContent /+"[fileExtension='.wim',mimeType="application/x-ms-wim"]"