Pack 64.7z -

If you are using esd-decrypter-wimlib-64.7z , the "content" produced is a standard Windows ISO file from an encrypted ESD image:

: Right-click the file and select "Extract to 'PACK 64'" . PACK 64.7z

: Use a tool like 7-Zip to open the main installer and extract only the app-64.7z file. If you are using esd-decrypter-wimlib-64

Do you have a or source where you downloaded this file so I can provide more tailored instructions? If you are using esd-decrypter-wimlib-64.7z