Microsoft has released an out-of-band update, KB5086672For Windows 11 versions 24H2 and 25H2 The March 2026 preview update to replace KB5079391, which was pulled after users reported installation failures. The emergency update was released on March 31, 2026.
KB5079391 was originally released on March 26 with 29 changes, including Smart App Control and display improvements. Users immediately began reporting error code 0x80073712, which indicated missing or corrupted update files. Microsoft pulled the update within days of the initial rollout after confirming installation issues.
What does the KB5086672 emergency update provide
Microsoft says KB5086672 replaces all older updates and includes security and fixes from both the March 2026 Windows Security and non-security Preview updates, as well as a fix for an installation error. Users who were unable to install KB5079391 should find this new update includes all of its changes.
How to get KB5086672 update on Windows 11
setting tools “Get the latest updates as they become available” You may automatically receive the KB5086672 update with Windows Update enabled. If that setting is not active, users can install the update manually: Open Settings, go to Windows Update and select Download and Install.
Why does Windows 11 need another out-of-band fix this month?
KB5086672 is the third out-of-band update released by Microsoft in a short period of time. Less than a week before this update, Microsoft released a separate emergency update to fix this a sign-in problem Due to the March 2026 Patch Tuesday security patch, which broke Microsoft account authentication in Teams, OneDrive, Edge, and Microsoft 365 CoPilot.
Microsoft has also released two additional out-of-band updates targeting Windows 11 Enterprise devices with hotpatch support. These updates address Bluetooth device visibility bugs and security vulnerabilities in the Routing and Remote Access Service management tools. Additionally, Microsoft published guidance for C: Drive access issue affecting Samsung laptops due to corrupted versions of Samsung Galaxy Connect and Samsung Continuity Service apps.
The company has not commented on how often out-of-band updates are released or whether it plans to change its update testing procedures.
