IAG Installation Error: Windows cannot access the specified device, path, or file

Source: Microsoft Support

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Windows cannot access the specified device, path, or file error when installing an IAG patch.

You must be logged on as the local administrator when installing IAG updates or Service Packs.

If you are logged on with a domain user account that is in the administrators group and still get this error, try a cmd shell to launch the program as the local administrator:

>runas /user:%hostname%\administrator cmd.exe

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