202310 Cumulative Update For Windows 11 For X64based Systems Kb5031358 Exclusive Jun 2026

Then schedule a reboot using:

If you encounter errors like 0x800f0988 or 0x800f081f while installing, try these community-recommended steps: KB5031358 (OS Build 22000.2538) Then schedule a reboot using: If you encounter

The term in the context of KB5031358 is often misunderstood. It does not mean "secret" or "limited access." Instead, in Microsoft’s update nomenclature, "exclusive" typically indicates that this update is only available through specific, non-standard channels , or that it contains fixes that are not being rolled out to all devices via Windows Update simultaneously. Impact: Requires restart

KB5031358 included various non-security fixes that were previously tested in preview builds like KB5030301: Rollback available: 30 days via standard uninstall

Severity: Critical (Remote Code Execution & Elevation of Privilege). Impact: Requires restart. Adds Copilot infrastructure, fixes 3 zero‑days. Top risk: BitLocker recovery prompt on some NVMe drives. Rollback available: 30 days via standard uninstall.

Some users reported installation errors like . Recommended fixes include: Running the Windows Update Troubleshooter.

: Common community-recommended fixes included running the Windows Update Troubleshooter , clearing the SoftwareDistribution cache, or manually downloading the standalone package from the Microsoft Update Catalog . Known Issues Post-Update