Lock and Unlock folder

To lock folder

Create a text file on the same path where your folder resides and write (e.g. if u want to lock folder on d:\ then create these files on d:\)

ren lockfolderName lockfolderName.{21EC2020-3AEA-1069-A2DD-08002B30309D}

then save this file with extension ".bat"

To unlock folder

Create a text file on the same path where your folder resides and write
ren lockfolderName.{21EC2020-3AEA-1069-A2DD-08002B30309D} lockfolderName
then save this file with extension ".bat"