follow the steps below:
1. Create New folder at desktop and copy your files
2. Run cmd.exe ( Win + R then type cmd.exe).
3. then Type:
4. Now hit Enter and type:
cacls Foldername /E /P everyone:n
5. Replace 'Foldername' with your folder and press enter, it is Locked Now. Now Close the command Prompt and try to Open your folder !!!!
6. Now to Unlock it replace the 'n' in with 'f'. and Enjoy!!!!!!