Outage · High impact2 sources
Microsoft admits SQL Servers might wobble after October update
The Register · By Richard Speed ·
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
Encountered some odd SQL Server connection behavior since the October update? There might be a culprit… Microsoft has admitted that a change has caused linked server queries to fail to close connections. Linked servers via OLE DB providers have been around for years and are a…
Timeline
Microsoft confirms that recent Windows updates cause SQL Server issues
www.theregister.com - Articles
Microsoft admits SQL Servers might wobble after October update
BleepingComputer
Microsoft: Recent Windows updates cause SQL Server performance issues