I have a FILESTREAM share on a SQL server in domain AAA and a users in domain AAA and BBB. The two domains have a full trust. Users in domain AAA can access the share from UNC \server\mssqlserver\dbshare\tableshare or through Explore FileTable in SSMS. Users in domain BBB can't access the share through the UNC or SSMS. However they can map a network drive to the share and access it that way. Both users have same login/user permssions on the instance/database. Why cant users in domain BBB access the share through the UNC path or SSMS?


  • Is there an error message? – Max Vernon Feb 22 '17 at 23:04
  • Mapping a network drive involves using a UNC, FYI. – Max Vernon Feb 22 '17 at 23:05
  • Are BBB users having the network drives mapped using the credentials of another user (perhaps a AAA domain user)? (That's the only way it makes sense that they can access via mapped drive but not via UNC, and it would be an important clue to get confirmed.) – T.H. Feb 23 '17 at 16:53
  • @MaxVernon - standard error for UNC path click: Windows cannot access \\... and Explore FileTable in SSMS returns : The File location cannot be opened. Either access is not enabled or you do not have permissions for the same. However I know the user has a login/user with appropriate permission. Yes I know mapping a network drive involves a UNC, that's why its odd clicking the UNC path fails and mapping the UNC works. T.H - BBB user is mapping the drive using their BBB credentials. – SEAKDev Feb 23 '17 at 18:40
  • Not sure if accessing the share through the domain trust makes it a memory resident file. I've read FILESTREAM can have problems with that and mapping the share as a network drive can fix it. – SEAKDev Feb 23 '17 at 19:00

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.