I removed all permissions of Authenticated Users for my C: drive (entire permissions).
What I did is as follows:
. Right click C:
. Deny all permissions for Authenticated Users
Now I can not reach my drive, can not change permissions again, and can not restore permissions etc.
Even Admin account can not do anything.
What can I do?
P.S: Please do not ask me "why, why did you do such thing?".