Some Galaxy Book Laptops Lose Access to “C” Drive, Fix in Progress

Are you using a Samsung laptop and unexpectedly unable to access the “C” drive? If so, you are not alone. Several users have complained about the same problem on some Galaxy Book devices. The good news is that Samsung is collaborating with Microsoft to develop a solution to fix it.

Samsung Galaxy Connect app bug blocks system access on Windows 11

After installing recent updates (such as the February and March 2026 security updates), some PC users have started seeing an error message: “C:\ is not accessible – Access denied.” This error stops access to files from the main system drive. On top of that, it does not allow users to launch applications such as Outlook, Office apps, web browsers, system utilities, and Quick Assist.

While affected users thought a Windows security update was the culprit, it turned out to be wrong. After investigating the user reports, Microsoft and Samsung found that a bug in the Galaxy Connect app was triggering the issue. The Korean firm’s Galaxy Book 4 models running Windows 11 versions 24H2 or 25H2 are experiencing the problem. Moreover, some desktop models, such as NP750XGJ, NP750XGL, NP754XGJ, NP754XFG, NP754XGK, DM500SGA, DM500TDA, DM500TGA, and DM501SGA, have also been affected by the bug.

To mitigate the issue, Microsoft temporarily removed the latest Galaxy Connect app from the Microsoft Store. This will prevent new installations that could trigger the bug. Samsung has also republished a stable earlier version of the app, which could stop the problem from affecting more devices.

However, recovery options remain limited for impacted devices. Users still can’t access the C: drive while also failing to uninstall updates or collect logs. Samsung and Microsoft are now working to develop and validate solutions for devices already affected. We’ll let you know if either company shares new guidance for users. Meanwhile, as a workaround, you can manually change ownership of system files, though this could weaken the built-in security level.