How to restore security permissions to default settings

[emolina]

Hello, I had problems sharing files on my network and I went to different support forums looking for answers and I changed user permissions on my (c/) drive and tried to add "Everyone" following instructions from other forum, I did something WRONG and I did not fix the problem and now I just create a new one because "SYSTEM" and "Authenticated Users" do not exist anymore. I need help to see if someone can tell me how to restore settings to default.

Thanks

 

[CarlTR6]

You can try a restore point previous to the time you made your changes. Any other changes you made, installations, etc since that restore point will be undone too.