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1.) Disconnect all drive mappings in Windows to your NAS and close any other connections.
2.) Log out and back in to clear the cached credentials.
3.) Open explorer and choose map a network drive.
4.) Enter the UNC Name \\DeviceName\ShareName of the NAS and choose any free drive letter.
5.) Choose Reconnect at logon.
6.) DO NOT Choose Connect using a Different user name.
7.) Hit OK. You will be prompted to enter credentials. If you are not prompted you still have an open connection to the NAS. Start back at step 1.
8.) Enter the DeviceName\UserName and the Password for the user account on the NAS device in the boxes.
9.) Check the box to remember the password.Remember to check the box to remember the password, if not u need to redo everything back to step 1.