DOCUMENT:Q232937 11-JUN-2002 [winnt] TITLE :UNC Shortcut Do Not Work with RAS to Server with Over 700 Shares PRODUCT :Microsoft Windows NT PROD/VER::4.0 OPER/SYS: KEYWORDS:SBS45 ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server version 4.0 - Microsoft Windows NT Server version 4.0, Terminal Server Edition - Microsoft Windows NT Workstation version 4.0 - Microsoft Windows NT Server, Enterprise Edition version 4.0 ------------------------------------------------------------------------------- IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base: Q256986 Description of the Microsoft Windows Registry SYMPTOMS ======== When a user attempts to connect to a share that is located on another computer by double-clicking an icon that points to that share (a shortcut), if that icon contains a universal naming convention (UNC) path to a share on a remote computer, and your computer gains access to that computer by using a Remote Access Service (RAS) connection, the connection may be unsuccessful and the icon may change to a Microsoft default icon. CAUSE ===== This problem can occur because the WNetGetResourceInformation() function on the client retrieves all share names from the remote computer when the function accesses one of the remote shares by means of the shortcut on the client. The WNetGetResourceInformation() function has a built-in timer (NetLinkTimeout) with a default time-out value of 7.5 seconds. To retrieve a relatively large number of shares over a slow RAS link takes longer than 7.5 seconds, in most situations. A "relatively large number of shares" has been empirically determined to be about 700 shares, but this number may be larger or smaller depending upon the data rate that is achieved over the RAS connection between the client and the server. RESOLUTION ========== WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk. To resolve this problem, add the following registry key: 1. Start Registry Editor (Regedt32.exe). 2. Locate and click the following key in the registry: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer 3. On the Edit menu, click Add Value, and then add the following registry value: Value name: NetLinkTimeout Data type: REG_DWORD Unit: milliseconds Default: N/A (hard coded to 7500) 4. Quit Registry Editor. You need to create this value because it does not exist by default. Initially, set the value to 9000 (9 seconds). If time-out behaviors persist, increase this value in 500 millisecond increments until the time-out behavior stops. The time-out value in the preceding registry key must only be modified on the computer that connects to the shares. STATUS ====== Microsoft has confirmed this to be a problem in the Microsoft products that are listed at the beginning of this article. REFERENCES ========== For additional information, click the article number below to view the article in the Microsoft Knowledge Base: Q255772 Long Delay When Displaying Icons in Start Menu Subfolder Additional query words: ====================================================================== Keywords : SBS45 Technology : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTSEntSearch kbWinNTSEnt400 kbWinNTS400search kbWinNTS400 kbNTTermServ400 kbNTTermServSearch Version : :4.0 Issue type : kbprb ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.