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, ...
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.
Microsoft confirmed that the October 13 KB5126646 update can prevent SQL Server linked server queries from closing ...
SQL Server connectivity errors can have many causes, including network configuration, authentication, name resolution, firewall rules, and Transport Layer Security (TLS) settings. This troubleshooting ...
You can encrypt all incoming connections to SQL Server or enable encryption for just a specific set of clients. For either of these scenarios, you first have to ...
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