Windows 10/11 cannot install feature updates, optional features or store apps: permission error 0x80070005

Since last November a permission-denied problem with 0x80070005 has been plaguing my PC. The problem occurs when: Installing/updating an app in Microsoft Store. If I search for an app that failed to install by running Get-AppxPackage Name , the package that failed to install will be listed, but installation status is staged PackageUserInformation : {S-1-5-18 [S-1-5-18]: Staged} instead of installed PackageUserInformation : {S-1-5-21-4101337116-MyUserID-******* [MyUserName]: Installed} The app will be properly installed if it's correctly registered. So I can counter this problem by running the

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