Why can't I start native apps in Windows 10 while I'm in Admin group?

[Iksie]

I have a strange issue in Windows 10 Pro (Dutch). With my account (in Administrator group) I cannot start apps like 'Control panel', 'Paint', etc from the startmenu. When I click just nothing happens: no window, no message, nothing. Only via desktop As Administrator works. Also apps like Bitdefender Security doesn't start automatically. I tried to create a new account, but same issues. But, when I startup with the build-in Admin account (I enabled it temporarely) and switch to my own account (with Admin account open) everything works well!
I expect that the issue is related to access controls or something.
My system: Intel Core i7-6700K; Asus Maximus VIII Ranger motherboard, Corsair Vengeance LPX Black 16GB DDR4-2666 CL16 kit, Geforce 980Ti, Samsung 950 Pro 256GB (NVMe m.2 SSD). Windows is installed from scratch, no update, on the 950 Pro SSD.
Maybe someone can help?

 

[adrian1338]

Can you create a new admin account and do it from there? if yes just delete the old account and user directory and create a new admin.

 

[Iksie]

Yes I did create a second account, and assign it to the Administrators group as well. After reboot I logged in with that account and same issues occured. However I didn't delete my original account. Maybe I can try this weekend.