Microsoft has released an out-of-band update, KB5077796, for Windows 10 OS builds 19045.6811 and 19044.6811, specifically targeting users on the Extended Security Updates (ESU) and Windows 10 Enterprise Long-Term Servicing Channel 2021. This update bundles previously planned fixes that were originally set to be released in January as part of KB5073724. The update addresses an issue with Remote Desktop connections, which often resulted in sign-in failures due to authentication problems. With this new update, users may see improved connectivity and reduced login issues when using Remote Desktop setups.

Windows 10 KB5077796 (OS Builds 19045.6811 and 19044.6811) Out-of-band released

Microsoft quietly released another out-of-band enhancement called KB5077796 for OS builds 19045.6811 and 19044.6811. This specifically targets Extended Security Updates (ESU) users as well as those on the Windows 10 Enterprise Long-Term Servicing Channel 2021.

This latest batch is intriguing because it bundles fixes that were originally planned for a January release, found in KB5073724 covering builds up to 19045.6809 and 19044.6809. Looking closer at what's included shows one particular fix might be worth noting right away.

Users employing Remote Desktop have run into problems getting connected. The frustrating part was the sign-in failures across different apps, from specialized third-party programs to the standard built-in Windows app itself. These issues stemmed from missteps in how Windows handled authentication during connections.

KB5077796 seems aimed at fixing this, hopefully smoothing things out for anyone relying on Remote Desktop setups without encountering these login roadblocks again.

January 17, 2026—KB5077796 (OS Builds 19045.6811 and 19044.6811) Out-of-band - Microsoft Support

January 17, 2026—KB5077796 (OS Builds 19045.6811 and 19044.6811) Out-of-band - Microsoft Support