Nintalking

1. Can T Download Apps From Mac App Store Computer
2. Cant Download Apps From Microsoft Store

I had the same problem and just thought I'd share my findings (as it took me ages to find the answer).

1. Sign out of App Store.
2. Sign out of iTunes.
3. Sign into the App Store.
4. Sign into iTunes.
5. Accept the iTunes Terms.
6. Close both App Store and iTunes.
7. Open Terminal
8. Run the following command: sudo find /private/var/folders -type d -name com.apple.appstore -exec rm -rf {} ;
9. Input password when prompted.
10. Run this command to reboot your mac: sudo reboot
11. After reboot open App Store and try to purchase a app.

Can T Download Apps From Mac App Store Computer

Can't download any apps from mac app store, really frustrating. Posted by 2 hours ago. Can't download any apps from mac app store, really.

Cant Download Apps From Microsoft Store

That fixed the issue for me, I hope it does the same for you :-)