Can't install AIRAC for PMDG 739

when i try to install the nav data/ update them, it just gives me this error after 3 secs of waiting

Hello! Welcome to our forum!

This error message indicates that the folder where the addon is installed is currently open and used by another process that is not the Navigraph Hub.

Perhaps you have the PMDG Operations Center running? Does this issue occur even if you restart your computer?

Kind Regards,