I can't install the liveries. I installed the Boeing 717 but keep getting error. Its says windows cannot access the specified device, path, or file. You may not have the appropriate permission to access the item. I tried opening as administrator and still get the same error. I tried restarting the pc and still the same error.

I figured it out. It was the antivirus. So if you guys have trouble installing the liveries, try turning off the antivirus.

Please update your Windows Defender

OR

Try to do the following:
1. Open command prompt as administrator and change directory to c:\Program Files\Windows Defender
2. Run MpCmdRun.exe -removedefinitions -dynamicsignatures
3. Run MpCmdRun.exe -SignatureUpdate