: Close Steam completely, navigate to your Steam installation folder (usually C:\Program Files (x86)\Steam ), and delete the appcache folder before restarting Steam.
There are several reasons why the application may not be found:
can block the application's read/write operations, leading to a state where the system treats the application as "not found" or "blocked". Protection History Windows Security Virus & Threat Protection Protection History to see if any game files have been quarantined. Exclusions : Add the entire