Hi, You can try this method: 1 Start RegEdit, go here an set the following registry key to "1" : HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\LargeSystemCache 2 Set the following registry key to "3" : HKLM\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters\Size 3 Reboot Windows 7. Note: You’d better backup the registry before you want to change it. Regards, Leo Huang Leo Huang TechNet Community Support

Hi, I hope to have access to an affected machine on Monday and I'll be able to try your suggestions. In past cases I haven't had enough time for troubleshooting since we end up re-imaging the machine so the user can get back to work. Feel free to add more suggestions in the meantime. Thanks

Hi, We've seen this problem in 6/7 machines so far. All Windows 7 Pro joined to a 2003 Domain. Users suddently lose access to network shares after a reboot or standby/hibernate. This affects both wired and wireless connections. Users can still ping the machines and connect using RDP. In the connection STATUS I see that NETBIOS OVER TCP/IP is no longer enabled. I've tried reinstalling NIC drivers, clearing DNS cache, resetting WINSOCK and TCP/IP stack, manually enabling NetBios over TCP/IP, disabling firewall, disabling IPv6 (if active)... Even if I get NETBIOS OVER TCP/IP to be ENABLED again the problem still occurs. A system restore seems to resolve the issue but it eventually resurfaces and then a restore no longer helps. We end up reinstalling the machines. I've seen this problem described here and on other forums but nobody seems to have a conclusive resolution or even an idea of what causes this problem. Windows 7 machines have the latest SP and updates, and so does the 2003 R2 DC.

If you have tried my suggestion above, please feel free to let know if it can resolve your issue. Furthermore, you can also try to enable "Always wait for the network at computer startup and logon" policy under Computer Configuration/Administrative Templates/System/Logon in the Group Policy to check if it works. Regards, Leo Huang Leo Huang TechNet Community Support

Hi, You can try this method: 1 Start RegEdit, go here an set the following registry key to "1" : HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\LargeSystemCache 2 Set the following registry key to "3" : HKLM\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters\Size 3 Reboot Windows 7. Note: You’d better backup the registry before you want to change it. Regards, Leo Huang Leo Huang TechNet Community Support

Sorry for the delay. I tried your suggestion on a machine that experienced this issue today. Sadly, the registry changes made no difference. The problem remains and since System Restore is failing, I'll have to reimage the laptop :(