April 19, 2026—KB5091573 (OS Build 17763.8647) Out-of-band
Applies to: Windows Server 2019 This out-of-band update includes fixes and improvements that are part of the following update: April 14, 2026—KB5082123 (OS Build 17763.8644) The following is a summary of the issues that this out-of-band update addresses when you install this update. The bold text within the brackets indicates the item or area of the change we are documenting. [Domain ...
“UPnP Not Successful” appears in your network settings
If you see “UPnP Not Successful” in your Xbox console's network settings, your router may need an update.
Error 0x803F8001 occurs when you launch an Xbox game or app on console ...
Verify that you have a valid subscription to access this content and are signed into an account with a valid subscription. If your subscription is valid, the game might have left the game pass catalogue. Otherwise, verify you're signed in with the account that purchased this game. If you don't own the game, you'll have to buy it from the Xbox app.
Mobile device in Start Menu - Microsoft Support
Note: This feature is being gradually rolled out and may not be available to all users immediately. We will update this page as soon as it becomes widely accessible. Thank you for your patience!
March 10, 2026—Hotpatch KB5079420 (OS Builds 26200.7979 and 26100.7979 ...
This Hotpatch update for Windows 11, version 25H2 and 24H2 (KB5079420), improves functionality, performance, and reliability. To learn more about differences between security updates, optional non-security preview updates, out-of-band (OOB) updates, and continuous innovation, see Windows monthly updates explained. For information on Windows update terminology, see the different types of ...
Use the System File Checker tool to repair missing or corrupted system ...
Describes how to use the System File Checker tool to troubleshoot missing or corrupted system files in Windows.
Use network transfer to copy games and apps to another Xbox
Network transfer lets one Xbox console copy games and apps from another console, so long as they’re on the same home network. Copying this way can be faster than downloading another copy of the same game or app. If you have a metered internet connection, this can also save you money.
December 9, 2025—KB5071417 (OS Build 22631.6345)
This cumulative update for Windows 11, version 23H2 (KB5071417), includes the latest security fixes and improvements, along with non-security updates from last month’s optional preview release. To learn more about differences between security updates, optional non-security preview updates, out-of-band (OOB) updates, and continuous innovation, see Windows monthly updates explained. For ...
Make older apps or programs compatible with the latest version of ...
Learn how to get older apps or programs to run on Windows 10 or Windows 11 by adjusting compatibility settings.
Contact - Microsoft Support
Support for Windows 10, Office 2016 and Office 2019 has ended on October 14, 2025. Learn more about your options for Windows 10 or for Office.