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#1
Have a look at this thread.
https://www.tenforums.com/general-dis...-accounts.html
He adjusted the User Account settings and then did a reboot. That he solved his problem.
See if that also solves your problem.
Sorry, I apologize. I edited my last reply. Please read it again.
The UAC fixed it. . Then i turned it off again and rebooted. . App store works now. . Thanks!