filecoauth.exe

FileCoAuth.exe is a legitimate Windows component tied to Microsoft Office co-authoring and OneDrive sync. Errors from this process typically appear when working on shared documents, interrupting collaboration. Common causes include corrupted Office installations, outdated software, or conflicts with security software. Troubleshooting steps range from repairing Office and clearing the Office cache to adjusting antivirus exclusions and running system file checks. In some cases, deeper system issues like permission problems or malware mimicking the file require careful diagnosis. This tag covers practical fixes and safety guidance for resolving FileCoAuth.exe errors on Windows.