Windows 11 KB5074109 has caused several issues for users, particularly those with Nvidia GPUs, including black screens, Outlook freezing with POP accounts, and problems with File Explorer's desktop.ini settings. Users have reported random black screens and desktop freezes after installing the update, with some finding temporary relief by changing their monitor's DisplayPort mode. Outlook Classic has been problematic, remaining active in the background and freezing shortly after opening, prompting users to terminate the process in Task Manager or uninstall the update. Additionally, the update disrupts Azure Virtual Desktop functionality, leading to sign-in failures and connection issues. Microsoft has acknowledged these problems and is investigating solutions, including a Known Issue Rollback for AVD. The update also breaks the LocalizedResourceName directive in File Explorer, preventing folder name customization. Users can uninstall the update through Settings, but this may expose them to security vulnerabilities.