Hi Asim,
Which SQL databases you are restoring?
Do you get any Virtual Acess Denied error in the job log?
Please verify that the server name and the drive are the same as they were at the time of backup.
Try following steps:
1. Open SQL Enterprise Manager.
2. Select the Database whose restore has to be performed.
3. Right Click the database and select the properties.
4. On the database's properties window, go to the options tab and select Restrict Access to Single User Mode .
5. Close the SQL Enterprise Manager.
6. Perform the restore operation.
7. Make sure that Replace database and filegroups needs to be checked.
Do revert back with details.
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