MO2 needs permission to move files into your "Mod" directory. If you have your game or MO2 installed in the C:\Program Files (x86) folder, Windows User Account Control (UAC) will often block the extraction. Close MO2. Right-click your Mod Organizer 2 shortcut. Select "Run as Administrator."
By following these steps, you should clear the "Extraction Failed 7" error and get back to building your perfect load order. extraction failed 7 mo2