Outage · High impact2 sources

Microsoft: Recent Windows updates cause SQL Server performance issues

BleepingComputer · By Sergiu Gatlan · 2h ago

The Brief · written from 2 sources

Microsoft has confirmed that Windows updates released since the October 2026 Patch Tuesday cause SQL Server performance and stability issues.
A change has caused linked server queries to fail to close connections.
Linked servers via OLE DB providers are the affected setup, according to The Register.

Why it matters

Teams running SQL Server may see connection problems, performance degradation or instability after installing recent Windows updates, especially if they rely on linked server queries.

Who’s affected

SQL Server teams running Windows updates released since October 2026
Teams using linked servers via OLE DB providers

#sql-server
#windows
#microsoft
#regression
#performance
#databases

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

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