Overview
- Microsoft halted the optional Windows 11 preview update KB5079391 for versions 24H2 and 25H2 after installation failures on some devices.
- Affected users reported error 0x80073712 with messages about missing or problematic update files during setup.
- The code typically points to missing component files in Windows' WinSxS store, which can block servicing and trigger repeat install attempts.
- Microsoft says the rollout is paused and the update may not appear in Windows Update while it investigates, and it has not given a timeline for a fix.
- The pulled preview contained 29 changes including Smart App Control and display tweaks, better Windows Hello fingerprint reliability, and Windows Recovery stability on ARM64, and it follows an out-of-band patch that fixed Microsoft account sign-in breakages earlier in March.