No more rights as administrator (Windows 10)?

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And I have created a second user account. I wanted to block access from the C hard drive for this second account. I then denied access in the data carrier management for users. Now I no longer have access to hard drive C with the administrator account. How can I change this somehow without having to reset the laptop?

Ha

Only the delightful smile is quick because you made a DAU mistake.

Where is it If you have admin rights in your user account, you can go to Computer Management and then click on Disk Management, then right-click on C: and then on Properties, then on the Security tab and then on Edit, then on Add and then enter your username and click OK. Confirm the window afterwards with OK and then the last one with OK. Then you restart your Windows. That should be it.