The February 2026 cumulative update for Windows 11, KB5077181 (build 26200.7840 for 25H2/24H2, and 22631.6345 for 23H2), released on February 10, 2026, has led to widespread reports of installation failures and post-update issues across many PCs. While the update aimed to deliver critical fixes, several users are now facing new problems instead. ([pureinfotech.com](https://pureinfotech.com/kb5077181-windows-11-february-2026-update/?utm_source=openai))
Reported Problems:
- Error codes such as 0x800F0991, 0x800F0983, and 0x800F0922 during installation. ([windowscentral.com](https://www.windowscentral.com/microsoft/windows-11/windows-11-february-update-kb5077181-hits-installation-errors-and-system-issues?utm_source=openai))
- After installation, issues with Bluetooth devices going missing or refusing to work. ([windowscentral.com](https://www.windowscentral.com/microsoft/windows-11/windows-11-february-update-kb5077181-hits-installation-errors-and-system-issues?utm_source=openai))
- Users with NVIDIA graphics report display glitches, failure to resume from sleep, and freezing accompanied by audio distortion. ([windowscentral.com](https://www.windowscentral.com/microsoft/windows-11/windows-11-february-update-kb5077181-hits-installation-errors-and-system-issues?utm_source=openai))
- Network connectivity and DHCP errors—Wi-Fi ties to router, but no internet connectivity. ([windowscentral.com](https://www.windowscentral.com/microsoft/windows-11/windows-11-february-update-kb5077181-hits-installation-errors-and-system-issues?utm_source=openai))
What Microsoft Has Recommended:
- Uninstalling KB5077181 to restore system stability for affected users. ([windowscentral.com](https://www.windowscentral.com/microsoft/windows-11/windows-11-february-update-kb5077181-hits-installation-errors-and-system-issues?utm_source=openai))
- Temporarily pausing Windows Update so system doesn’t attempt to reinstall the patch automatically. ([windowscentral.com](https://www.windowscentral.com/microsoft/windows-11/windows-11-february-update-kb5077181-hits-installation-errors-and-system-issues?utm_source=openai))
- Using DISM tools or performing a repair install in cases where partial installation has occurred. ([windowscentral.com](https://www.windowscentral.com/microsoft/windows-11/windows-11-february-update-kb5077181-hits-installation-errors-and-system-issues?utm_source=openai))
As of now, Microsoft has not issued a public fix or workaround beyond temporary measures; users are cautioned to back up data before attempting repairs or using optional recovery tools.