Hi,
Thank you for posting your query on Microsoft Community.
I understand your concern regarding the issue that you are facing.
Please Share this information to assist you better.
1. Have you logged in to admin account?
2. Is the issue specific with any files/folder or all files on computer?
You might be able to resolve this issue by restoring your ownership of the files and folders.
1. Sign-in as an administrator on your computer.
2. Navigate to the folder where you're having the problem. Right-click and select Properties from the pop-up menu.
3.Under Properties | Security tab, click the Advanced button, then click "Change" owner on the Advanced Security Settings dialog (if you are already the owner, do this step anyway!), and in the resulting dialog enter whatever you want the owner to be
4. Now a new check-box appears labeled "Replace owner on sub-containers and objects"; check it.
5. Also check the box at the bottom "Replace all child object permission entries with inheritable permission entries from this object."
6. Make sure under the Permission entries grid that your current account has Full control (if not Edit or Add your account to be listed with full control). Finally hit Apply. This may take a while.
Hope this helps. If you have any further issues, please get back to us and we would be happy to help you.