0x80073CF9 – Store app cannot be installed

Store app cannot be installed.

Stop if unsure or if a new warning appears. Save your work before changes and ask IT before changing a work device. Never disclose passwords or recovery keys.

Check free storage and correct Microsoft Store account status.
Close store and run wsreset.exe using the command summary.
Check Store and Windows updates. Back up app data before reinstalling; no blanket PowerShell re-registrations of all apps.

Test after each step and stop when the issue is solved. Checkmarks are not permanently saved.