The March 2026 Patch Tuesday update, KB5079473, is not causing significant issues like BSODs or reboot loops, according to Microsoft. Reports of an inaccessible C: drive and application malfunctions on Samsung PCs are linked to a recent update of the Galaxy Connect app, not the Windows update. Microsoft confirmed no known connections between the March update and major system failures. The update includes over a dozen security fixes and introduces new features, such as improvements to the File Explorer search bar and a Bing-based Internet speed test tool. Specific Samsung models are experiencing C drive accessibility issues due to the Galaxy Connect app, which has disrupted permissions.