Microsoft has identified the Samsung Galaxy Connect app as the source of a significant bug affecting Samsung laptops running Windows 11, which causes "C: is not accessible - Access denied" messages. This issue prevents users from accessing files, launching applications like Outlook and Office, and performing administrative tasks without specific user action. Initially suspected to be related to Samsung Share, the investigation confirmed the Galaxy Connect app as the culprit. The bug has been reported in Brazil, Portugal, South Korea, and India, particularly affecting the Samsung Galaxy Book 4 and other Samsung devices, though a comprehensive list of affected models has not been provided. In response, Microsoft has removed the Galaxy Connect app from the Microsoft Store and is working with Samsung to investigate the issue. Samsung has reintroduced a stable older version of the app to help users. Users are advised not to install or update the Galaxy Connect app and to wait for an official patch, as recovery options for affected devices are currently limited.