Network error Windows cannot access UNC

Question

question

Razzi-7932 asked Feb 9, '22 KarlieWeng-MSFT answered Mar 14, '22

Network error Windows cannot access UNC

Hello. I have an issue as follows... I have NetApp resources hosting a few CIFS shares, I am able to access, navigate to the shares by using its NetBIOS UNC path such as \\netapname\sharename from some Windows Server 2008 VMs, but there are others where it through an error Windows cannot access \\netappname, but ironically, if I use the IP address, it gets there, and I can view the folders with no issues. But using the UNC name it just does not work.. Weird. Thing is that the application relies on and uses the UNC name mapping and obviously using the IP is not an option in this case. Any help is much appreciated.

windows-server windows-dhcp-dns

5 |1600 characters needed characters left characters exceeded

Attachments: Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.

Answer 1 · 2022-03-14T08:05:44.873Z

KarlieWeng-MSFT answered Mar 14, '22

Hello @Razzi-7932

SMB will use NTLMv2, by default, when using an IP address in the UNC path or the system is not domain joined;
SMB will try to use Kerberos authentication when a hostname is used and the system is domain joined, In this case Look at the Kerberos traffic on TCP port 88 to make sure there are no Kerberos errors when getting the token.

Best Regards
Karlie

If the Answer is helpful, please click "Accept Answer" and upvote it.

5 |1600 characters needed characters left characters exceeded

Attachments: Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.

question