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Posted by NYopp
 - Today at 22:18:14
Is anyone else having issues in regards to this KB patch with their C drive reporting that its abnormally full?
Posted by Darryl Linington
 - Today at 20:09:59
Hi there! At the moment, I'm running the latest update. I won't be rolling back or uninstalling so I can keep an eye on this :)
Posted by JojoFR
 - Today at 18:58:17
I guess everything went back to normal once you uninstalled the update? 

I personally uninstalled it from my cloud-gaming instance (ShadowPC), as even ShadowPC sent an email to its customers saying this KB (KB5077181, but also KB5075941 if you're on the 23H2 branch) could make the system unreachable.
Posted by Redaktion
 - Today at 18:40:13
Windows 11 KB5077181 (OS Builds 26100.7840/26200.7840) shipped on Feb. 10, 2026. On a Lenovo LOQ test system, KB5077181 installed Feb. 11 (Build 26200.7840) and was followed by Wi-Fi instability, Bluetooth disconnects, stutter, and slow shutdowns.

https://www.notebookcheck.net/Windows-11-KB5077181-Microsoft-claims-stability-my-Lenovo-LOQ-proves-otherwise.1230119.0.html