In early February, a peculiar storage issue began to surface among users of Samsung’s Galaxy Book4 laptops. Reports indicated that many were encountering error messages stating, “C: is not accessible,” effectively locking them out of their primary drive. Initially, this seemed to be linked to a recent Windows Update, given the timing of the reports. However, a deeper investigation revealed a different culprit.
Identifying the Culprit
Both Microsoft and Samsung conducted thorough analyses and pinpointed the Galaxy Connect app, preinstalled on these devices, as the source of the problem. This app, designed for sharing or mirroring displays to Samsung Galaxy phones, inadvertently interacted with Windows in a manner that led to the operating system revoking permissions in the background. While the specifics of the malfunction remain undisclosed, the implications were clear.
Despite the release of the February 2026 security update for Windows 11, which some believed might have triggered the issue, reports of the problem began to emerge prior to the patch’s rollout. Recognizing the urgency, Microsoft logged the issue as known on its website approximately ten days ago, and by March 16, it was categorized as “externally resolved.”
Steps for Recovery
To assist affected users, Microsoft has published a comprehensive recovery article detailing steps to regain access to the C: drive. In a proactive measure to prevent future occurrences, both Microsoft and Samsung have removed the problematic Galaxy Connect app from their respective stores. In its place, an older, stable version has been reinstated. Currently, only those who have already experienced the issue need to take action to restore their systems.
