Step 1: Open My Computer -> Drive C -> UID Authority of India -> Aadhar Enrolment Client -> Conf Folder then right click on Saved.dat and click on restore previous version.
Step2: A window will open and after sometime some restore points will be displayed with named saved.dat..
Step3: click on one of the restore point and click on Restore Button, then a message will displayed and aadhar will register automatically.
Point B: if there is any issue in aadhar software and not working properly.
Step1: Go to control panel -> Services -> Stop QSSITV Service
Step2: Open My Computer -> Drive C -> UID Authority of India -> Aadhar Enrolment Client. and Copy Data and Conf Folder and paste Data and Conf Folder into Drive D (or some other location)
Step 3: Unistall and Install ECMP v18.104.22.168.
Step 4: Repeat Step 1
Step5 : Now Copy Data and Conf Folder and paste it into My Computer -> Drive C -> UID Authority of India -> Aadhar Enrolment Client.
By using above process your data will not lost, machine will register and local enrolment will also done.
Note: You doesnot need to use user credential and master & Register data in zipped format for import.