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Problems Browsing Shares from Win8.1

Posted: 21 Oct 2014 19:13
by molbert
I have several Windows clients that are able to browse/access the SMB shares I've set up on my NAS4Free server (one Win7 and one Win8.1). Unfortunately, I also have one Win8.1 client which almost always runs into problems accessing the exact same shares.

In trying to diagnose what's going on today I installed wireshark on the Win8.1 client having problems. When I attempt to access the SMB shares I see the following:

1031 14.351470000 10.0.0.169 10.0.0.5 SMB 166 Trans2 Request, GET_DFS_REFERRAL, File: \bigmo\FileBackups
1032 14.351626000 10.0.0.5 10.0.0.169 TCP 60 139→59927 [ACK] Seq=2515 Ack=2839 Win=64000 Len=0
1033 14.351627000 10.0.0.5 10.0.0.169 SMB 93 Trans2 Response, GET_DFS_REFERRAL, Error: STATUS_NOT_FOUND
1034 14.356654000 10.0.0.169 10.0.0.5 SMB2 516 Session Setup Request, INITATOR_NEGO, INITIATOR_META_DATA
1035 14.356830000 10.0.0.5 10.0.0.169 TCP 60 139→59924 [ACK] Seq=907 Ack=3023 Win=63488 Len=0
1036 14.356863000 10.0.0.5 10.0.0.169 SMB2 131 Session Setup Response, Error: STATUS_INVALID_PARAMETER
1037 14.358078000 10.0.0.169 10.0.0.5 SMB 166 Trans2 Request, GET_DFS_REFERRAL, File: \BIGMO\FileBackups
1038 14.358252000 10.0.0.5 10.0.0.169 TCP 60 139→59927 [ACK] Seq=2554 Ack=2951 Win=64000 Len=0
1039 14.358252000 10.0.0.5 10.0.0.169 SMB 93 Trans2 Response, GET_DFS_REFERRAL, Error: STATUS_NOT_FOUND

The name of the NAS4Free server is bigmo. The share I'm attempting to access is FileBackups.

This looks like the Windows client is trying to access the share but is being told it doesn't exist...which is weird, because it does exist. After the initial failure, a second attempt is made using the servername in uppercase, which also fails. There are further attempts to access bigmo using the uppercase name which I'm not showing here, all of which fail.

In looking at the CIFS/SMB config on my NAS4Free server I noticed that I set the NetBIOS name of the server to BigMo. Is this possibly a string case problem? If so, why would the other Win8.1 client be able to connect reliably?

The DNS name of the NAS4Free server is bigmo, all lowercase.