Microsoft has released an out-of-band cumulative update, KB5077744, for Windows 11 version 25H2 (2025 Update). This update resolves sign-in failures during Remote Desktop connections. The issue appeared after installing the January Patch Tuesday security update.
The out-of-band update KB5077744 (Build 26200.7627) for Windows 11 version 25H2 fixes sign-in failures during Remote Desktop connections that occurred after installing the KB5073724 (Build 19045.6809) update. It resolves an error that caused users to encounter credential request problems when trying to connect to Windows 365 and Azure Virtual Desktop services via the Windows App. Microsoft had previously confirmed the issue and recommended temporarily using the classic Remote Desktop client or the web version of Windows App.
Note: Update KB5077744 is only available for manual installation from the Microsoft Update Catalog.
The out-of-band update KB5077744 includes both the security fixes from the previous update KB5074109 (Build 26200.7623) dated January 13, 2026, and additional important fixes.
Some users experienced sign-in failures during Remote Desktop connections. This problem affected the authentication steps for various Remote Desktop applications in Windows, such as the Windows App.
If you have installed previous updates, only the new fixes contained in this package will be downloaded and installed.
| Feature / Change | Performance Impact | Optimization Impact | PC Speed Impact | Gaming Optimization Impact |
|---|---|---|---|---|
| KB5077744 (Build 26200.7627) — out-of-band fix for Remote Desktop sign-in failures | 🟢 High — restores reliable authentication for Windows 365 and Azure Virtual Desktop | 🟢 High — eliminates need for workarounds (classic client or web version) | 🟢 Medium — faster connection establishment to virtual desktops | ⚪ No direct impact |
| KB5073724 (Build 19045.6809) — earlier update that caused sign-in issues | 🔴 High — credential request loops reduced remote session performance | 🔴 Medium — forced users to switch to alternative clients | 🔴 Medium — slower access to cloud desktops for affected users | ⚪ No direct impact |
The last 10 Windows updates:
| Update | Build | Version | Windows | Channel | Date |
|---|---|---|---|---|---|
| KB5127757 | 28120.3181 | 26H1 | Windows 11 | Experimental | 2026-10-07 |
| KB5127758 | 26220.9606 | 25H2 | Windows 11 | Beta | 2026-10-07 |
| KB5127754 | 28020.3172 | 26H1 | Windows 11 | Beta | 2026-10-07 |
| KB5127753 | 26340.9616 | 26H2 | Windows 11 | Experimental | 2026-10-07 |
| KB5124192 | 28120.3151 | 26H1 | Windows 11 | Experimental | 2026-10-02 |
| KB5124196 | 28020.3142 | 26H1 | Windows 11 | Beta | 2026-10-02 |
| KB5124197 | 26220.9587 | 25H2 | Windows 11 | Beta | 2026-10-02 |
| KB5124193 | 26340.9596 | 26H2 | Windows 11 | Experimental | 2026-10-02 |
| KB5124166 | 26220.9568 | 25H2 | Windows 11 | Beta | 2026-09-25 |
| KB5124163 | 28020.3112 | 26H1 | Windows 11 | Beta | 2026-09-25 |