KB5077181 was released about a month ago as part of the February Patch Tuesday rollout. When the update first arrived, users reported a wide range of problems, including boot loops, login errors, and installation issues.
Microsoft has now acknowledged another problem linked to the same update. Some affected users see the message “C:\ is not accessible – Access denied” when trying to open the system drive.


I…. I can’t believe you are defending (or more accurately saying “it’s not that bad”) losing access to the root of your hard drive. It screams incompetence on Miroslop’s part.
And it screams incompetence on his part if he actually thinks this isn’t a problem.
Well I’m obviously not, I’m just saying, if the system wouldn’t boot at all, they’d lead with that. For most users, it won’t matter. For the more technical users, we’re either using Linux or macOS.