Hello saidapurs, you must be careful when changing the service's login user; you must disable the "password expiration policy" from those users (local and destination server's users) in order to prevent issues when connecting to the share folder created on the destination server/PC. I highly recommend you to create an exclusively SQL Server Service's User to prevent this issue and other ones.

If you have a NAS you will not have this issue in public folders.

Hope it help you.