Windows Server 2022 · KB5122882 · Build 20348.5622

What changed

Microsoft published the 2026-09-08 security baseline for Windows Server 2022 with KB5122882 and build 20348.5622.

Technical details

• KB5122882 security update for Windows Server 2022
• OS build 20348.5622

Why it matters

The current Microsoft KB and OS build are the baseline for deployment rings, compliance and servicing reports.

Known limitations

• Review the linked Microsoft KB for current known issues, safeguards and resolved issues.

Now check

• Validate KB5122882 and build 20348.5622 in the pilot ring
• Review the Microsoft KB known-issue section
• Confirm servicing stack and update media prerequisites