ERROR
While trying to open a map package in ArcGIS 10.8.2, the following error message is returned:
Invalid Package
Error reading package contents.
Additionally, a Windows Security notification also displays as follows:
Windows Security Unauthorized changes blocked Controlled folder access blocked ArcGIS FileHandler.exe from making changes. Click to see settings.
ArcGISFileHandler.exe is blocked by the Windows device security settings.
Note: Your user profile must have administrative access to make this modification.
C:\Program Files (x86)\Common Files\ArcGIS\bin
This exe is now allowed through Windows security, and the map packages can now load successfully.
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