See some of the most common upgrade and installation errors for Windows 10 and Windows 11, and what you can do to try to fix them.

Improvements This update includes new features and quality improvements that were part of the following update: April 14, 2026—KB5083769 (OS Builds 26200.8246 and 26100.8246) April 30, 2026—KB5083631 (OS Builds 26200.8328 and 26100.8328) Preview This update addresses security vulnerabilities documented in the following guide: May 2026 Security Updates The following summary outlines key ...

Learn how to use the Gaming Services Repair Tool to troubleshoot installation and update issues with Gaming Services on PC.

Get troubleshooting tips for problems with Game Bar on Windows 10.

This security update includes fixes and quality improvements that are part of the following updates: October 14, 2025—KB 5066791 (OS Builds 19044.6456 and 19045.6456) November 11, 2025—KB5071959: Windows 10, version 22H2 (OS Build 19045.6466) Out-of-band The following is a summary of the issues that this update addresses when you install this update. If there are new features, it lists ...

This cumulative update for Windows 11, version 25H2 and 24H2 (KB5089573), includes production-quality improvements. Visit the Windows release health dashboard for the latest status on this release. Announcements and messages This section provides key notifications related to this release, including announcements, change logs, and end-of-support notices. Windows Secure Boot certificate ...

The October 13, 2026 update for Windows 11 26H2 includes security and cumulative reliability improvements in .NET Framework 3.5 and 4.8.1. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the Prerequisites and Restart requirement sections. Summary Security improvements CVE-2026-58280 - .NET Framework Denial of Service ...

Learn how to troubleshoot problems updating Windows. Find answers to common questions and issues installing Windows updates.

When trying to install updates from Windows Update you might receive "Updates Failed. There were problems installing some updates, but we'll try again later" with Errors: 0x80073701, 0x800f0988

NEW 8/26/22 IMPORTANT Microsoft released KB5012170 on August 9, 2022. It provides support for Secure Boot Forbidden Signature Database (DBX). This is a standalone, security update. Windows 8.1 and newer clients and Windows Server 2012 and newer servers must install this update regardless of whether BitLocker is enabled or supported on your device. After you install the update, you might ...