Microsoft: Recent Windows updates cause SQL Server performance issues

Microsoft has confirmed that Windows updates released since the October 2026 Patch Tuesday are causing SQL Server performance and stability issues.

Microsoft admits SQL Servers might wobble after October update

The problem is that after the October 13 (KB5126646) update, connections created by SQL Server linked server queries might remain open. According to Microsoft, "As additional queries are performed, ...
Windows Report on MSN

Microsoft Confirms Windows Updates Are Breaking SQL Server Connections

Microsoft confirms recent Windows updates cause SQL Server performance and stability issues. An emergency fix is coming.
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How to Start SQL in Single-User Mode

Organizations can use SQL Server to reduce downtime, manage and secure databases, and discover patterns in mission-critical information to improve business intelligence. To rebuild a corrupted master ...
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How to Open a Microsoft SQL Server .Bak File

You can save a backup of your MS SQL databases to a single file on your hard drive. These backup files have names ending with the ".bak" file extension, and you use them to restore database backups ...
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SQL Server Connection Strings Made Easy

Over the last several years, I have created numerous PowerShell tools that rely on a backend SQL Server database. Being that I have so much experience with connecting PowerShell to SQL Server, you ...