I had an issue with a Windows 2008 server that it could not able to map a user share.
The same user was able to map the share from an old server without any issues.
Initially I did not have a clue about the share type and later came to know that it is a SAMBA / Unix share. So i started the investigation in that way and found that below solution will work for this kind of issue.
Please do let me know if any other issues or solutions identified by anyone on the same scenario.