Windows 11 KB5079391 rollout halted after install errors

Microsoft has temporarily paused the rollout of the Windows 11 preview update KB5079391 after some devices began failing to install it with error 0x80073712.

The optional March 26 release applies to Windows 11 versions 24H2 and 25H2, taking them to OS Builds 26100.8116 and 26200.8116. Microsoft updated the support document on March 27 to confirm a known issue and said the update’s availability had been temporarily limited while it investigates.

Microsoft confirms installation failures on some systems

According to Microsoft’s support page, some devices trying to install KB5079391 may see the message: “Some update files are missing or have problems. We’ll try to download the update again later. Error code: (0x80073712).”

Microsoft says the update may not currently be offered through Windows Update as a result. That means users who do not see KB5079391 in the optional updates section are likely affected by the company’s rollout pause rather than a problem specific to their PC.

Windows Central reported on March 29 that Microsoft had effectively pulled the update after installation issues began surfacing, turning what should have been a routine non-security preview release into a short-lived rollout.

KB5079391 included several quality-of-life fixes

The pause is notable because KB5079391 was not an insignificant preview patch. Microsoft’s release notes say the update included a range of fixes for Windows 11 24H2 and 25H2 ahead of the next regular servicing cycle.

Among the listed changes are improvements for File Explorer when unblocking downloaded files, display support that allows monitors to report refresh rates above 1000 Hz, a fix for an extra error message that could appear during sfc /scannow, and improved Windows Hello fingerprint reliability on some devices.

Microsoft also lists fixes affecting Safe Mode, audio, Voice Access, Start menu Group Policy behavior, and Remote Desktop PowerShell handling.

What affected users should expect now

For now, Microsoft has not published a workaround or a revised release for KB5079391. The company’s current guidance is limited to the rollout pause itself, with the update’s availability restricted while the issue is under investigation.

In practical terms, that leaves affected users waiting for Microsoft to either resume distribution, publish a corrected build, or roll the fixes into a later cumulative update.