I wanted to give a permission to a user, using SQL server. I think I did something wrong as now I can't access my Disk C.
I tried to reset permissions with Command prompt but it didn't allow me to do it. I also tried recovery and didn't allow me either..
There is important data on Disk C.. what should I do to regain access?
If I click on "Change", after 1 min. a warning message comes up saying: Windows Security >> Can`t open access control editor. Access is denied.