Microsoft releases Windows 11 KB5086672 to fix preview update installation errors
Summary
Microsoft released KB5086672 for Windows 11 24H2 and 25H2 after installation errors led it to stop the KB5079391 preview rollout. Microsoft says the update includes March security protections and the installation fix.
Key points
- Microsoft stopped the optional KB5079391 preview rollout after users reported error 0x80073712.
- KB5086672 replaces the failed preview for Windows 11 versions 24H2 and 25H2.
- Microsoft says the cumulative update includes protections and improvements from the March security and non-security previews, plus the installation fix.
- Devices with the latest-updates setting enabled may receive KB5086672 through Windows Update; others can install it manually from Settings.
Article Details
- Event Type
- Microsoft released an out-of-band cumulative update, KB5086672, for Windows 11 to replace the withdrawn March 2026 optional preview update, KB5079391.
- Impact
- Users of Windows 11 versions 24H2 and 25H2 encountered 0x80073712 installation errors with KB5079391, prompting Microsoft to stop its rollout. KB5086672 includes the March 2026 security protections and non-security improvements, along with a fix for the installation issue.