How to lock folder without any program ?

You can lock any folder without using any software. Follow these steps.

1. Suppose you have a folder named "LEARNER" in D:\LEARNER
2. In the same drive next to the folder create a new notepad file with the exact statement ren LEARNER LEARNER.{21EC2020-3AEA-1069-A2DD-08002B30309D}
3. Now save this text file as loc.bat or any other file with an extension ".bat"
4. Create another notepad file and type ren LEARNER.{21EC2020-3AEA-1069-A2DD-08002B30309D} LEARNER
5. Save this as key.bat or any other file with an extension ".bat"
6. Now there are two batch files. Double click loc.bat and your folder will change into Control Panel and its contents cannot be viewed
7. To open the folder double click key.bat and you get back your original folder .
8. For more safety keep the key.bat in another location .Only for unlocking copy paste to the original location and double click.