Changing Ownership
First, lets talk about ownership. To change ownership, right-click any file or folder, select Properties, and go to Security tab. Now click the Advanced button(shown in the screenshot below).
Next, you need to go to Owner tab and hit the Edit button. Then in the new dialog window choose the new owner and then click OK.
Changing Permission
If you are an administrator and cannot access a folder, this is due to permission error. To give complete permission to yourself, right-click the file or folder and select Properties. Now go to Security tab, and hit the Edit button.
Here select your username(account) and check the Full Control checkbox. When done, hit OK. Note that when you will check the Full Control checkbox, all others will be automatically checked too.
