Can't install/update Maps Pro from the Windows Store, error code 0x80073CFG
This is actually a bug of the Windows Store, not a Maps Pro bug.
To fix this issue, some users just changed the settings in Windows 10 not to download/save anything to SD-Card and it fixed the issue they were having with the Windows Store.
To change the default storage, go to Windows Settings > System > Storage > Save Locations > New apps will save to > and pick one of your hard drive.
You can also try these options
https://answers.microsoft.com/en-us/windows/forum/windows_8-winapps/error-code-0x80073cfg-when-try-to-install-a-new/5fdfb97d-e4ab-45da-a7ba-d99317718898
Also try Windows+R, then type:
wsreset.exe
and Enter
If it all fails, your best bet is the Microsoft support:
https://support.microsoft.com/contactus?pid=17517&TID=&STID=
If you are still running into issues, please email tickets@mapspro.uservoice.com