Hello, we are currently evaluating Windows 7 in our enterprise environment. Now we experience some issues, when accessing an UNC path. Details: Folder structure (DFS-Share): \\domainname\sharename\FolderA (User has permissions: "Traverse folder", "List folder", "Read attributes", "Read extended attributes", "Read permissions") \\domainname\sharename\FolderA\FolderAB (User has permissions: "Traverse folder", "Read attributes", "Read extended attributes", "Read permissions") please note, that user has no "List folder" permission on this folder. \\domainname\sharename\FolderA\FolderAB\FolderABC (User has permissions: "Traverse folder", "List folder", "Read attributes", "Read extended attributes", "Read permissions") \\domainname\sharename\FolderA\FolderAB\FolderABC\FolderABCD (User has permissions: "Traverse folder", "List folder", "Read attributes", "Read extended attributes", "Read permissions") Accessing \\domainname\sharename\FolderA\FolderAB\FolderABC\FolderABCD works fine in Windows XP, if linked in intranet, outlook or entering the path in Windows Explorer. Every folder level is accessible, FolderAB is shown as empty (as expected; see permissions above). In Windows 7 \\domainname\sharename\FolderA\FolderAB\FolderABC\FolderABCD is only accessible if copying the path to START -> RUN. It will not work from outlook, internet explorer or windows. accessing \\domainname\sharename\FolderA\FolderAB\FolderABC\FolderABCD from a link in an outlook e-mail or a link in intranet throws this error: Cannot find file '\\domainname\sharename\FolderA\FolderAB\FolderABC\FolderABCD'. Verify the path or Internet address is correct. accessing \\domainname\sharename\FolderA\FolderAB\FolderABC\FolderABCD in explorer by copying the path throws this error: Windows cannot access \\domainname\sharename\FolderA\FolderAB\FolderABC\FolderABCD Check the spelling of the name. ... Not every folder level is accessible, accessing FolderAB throws this error: \\domainname\sharename\FolderA\FolderAB refers to a location that is unavailable... But copying the path \\domainname\sharename\FolderA\FolderAB\FolderABC\FolderABCD to START -> Run opens the path correctly! That's very annoying. Can there anything be changed on this behaviour in Windows 7 (x86 & x64)? PS: We know, it would help to just permit the user to "list folder" FolderAB. But due to our directory structure, this is no solution. It actually works in Windows XP. I appreciate your help.

Hi, Thanks for posting in Technet. Howe does it work if you disable the firewall on the server computer? In Windows 7 SMB v2 is involved. May be the network browsing behavior of SMB2 is different than SMB. You may try to disable SMB2 in Windows 7 and check the result. To disable SMB2, please use the following commands. sc config lanmanworkstation depend= bowser/mrxsmb10/nsi sc config mrxsmb20 start= disabled Please note: there's an extra " " (space) after the "=" sign. If the above suggestions do not help, I suggest you download and install NetMon, then capture network trace when reproduce the issue and send to me. Using the New Microsoft Network Monitor (netmon) 3.3 with Network Experts Important Note: Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information. Please upload the saved trace log to Microsoft Service File Transfer. The password is m!no1obsy6b Arthur Xie TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com. Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi, thank you so much. sc config lanmanworkstation depend= bowser/mrxsmb10/nsi sc config mrxsmb20 start= disabled did work. It works now as before with windows xp. But do you know, what are the drawbacks using SMB v1? Marco

Hi, The following article introduces the advantages of SMB2. SMB2, a complete redesign of the main remote file protocol for Windows I think only enabling SMB in Windows 7 should work properly, because most of the computers in your network are using SMB. Arthur Xie TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com. Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ”