MacOS – Some SMB shares unavailable from Mountain Lion

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I've recently upgraded one of the machines in our office to Mountain Lion. Since doing so, when connecting to (or browsing to via Finder) our Windows 2008 R2 file server, some shares no longer appear in the list of available shares on that server. Not all shares have disappeared, only five out of approximately fifteen shares are not visible.

This does not appear to be a user rights issue, as the shares do not appear for multiple administrator and non-administrator accounts. Additionally, the shares were perfectly accessible from the machine pre-ML upgrade, as well as still being accessible from all other OSX machines in our environment. In other words, the issue appears to be confined solely to our single machine that was upgraded to Moutain Lion.

Has anybody discovered a solution?

Additional information:

  • MacBook Pro upgraded from Snow Leopard to Mountain Lion
  • Server is a member of our AD domain
  • Machine is not a part of the Active Directory domain
  • Credentials used to connect to server include Domain Admin credentials, user account with domain admin rights, and multiple user accounts without admin credentials but with credentials to view the missing shares
  • Server is running Window Server 2008 R2
  • Machine has no trouble accessing files on our XServe running 10.5 Server
  • Essentially, all other variables seem to be constant with no known changes to the network and server infrastructure involved

Best Answer

Solution: Join the Mountain Lion system to the Active Directory domain. User can still log in with their local user name, but when connecting to smb://servername, OSX will stop defaulting to .local for credentials. This is new to ML, and I think it is a bug, but this is the only solution that we have found.