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