Wsappbak __exclusive__ -

: It is often used to install apps without needing an active Microsoft Account or developer license, which is useful for "abandonware" or discontinued Store apps.

Once a package is created, it may need to be re-signed with a digital certificate using tools like ResignPackage to be accepted by Windows for installation. wsappbak

: To use the resulting backup, you typically need to install the : It is often used to install apps

If Disk Cleanup does not show the option, you can force deletion via Command Prompt: wsappbak