Hi We have a situation where a single user randomly loses connection to exchange, disconnects from mapped network drives and any other applications hang, forcing the user to log off and back on. These are random occurences with no specific pattern. Also, this may be coincidence but it seems to have started following an accidental deletion of her user account which was later re-created and the original mailbox re-attached to the new account. The user logs on to a Windows XP PC and authenticates to a Windows 2008 Domain Controller. We use Microsoft Exchange 2007 on a Windows 2008 Server. When this happens, there doesn't seem to be any events logged in the workstation event log other than the application log identifying that outlook has lost connection. All network cables, wall ports, switch ports have been changed including the users PC. Local profiles are in use. This is obviously frustrating for the user and any help to point us in the right direction would be appreciate. Many Thanks

Hello, Since only one user have that then this is not a general issue and I don't think that it is from Exchange / AD side. This seems to be a local issue. For that, I would recommend that you start by updating your NIC card driver. Note that this may be a hardware issue on your NIC card. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified Technology Specialist: Designing and Providing Volume Licensing Solutions to Large Organizations Microsoft Certified IT Professional: Enterprise Administrator Microsoft Certified IT Professional: Server Administrator Microsoft Certified Trainer

I don't think it is the NIC as the PC has also been changed.

Also, this may be coincidence but it seems to have started following an accidental deletion of her user account which was later re-created and the original mailbox re-attached to the new account. Creating a new mail box for the user might fix the issues. IMO, here's what you can try Move all the mails to PSTDelete the existing mail boxRecreate the mail box for the newly created user ID You might get some more help in Exchange forums http://social.technet.microsoft.com/Forums/en-US/exchangesvrgeneral/threads I do not represent the organisation I work for, all the opinions expressed here are my own. This posting is provided "AS IS" with no warranties or guarantees and confers no rights. - .... .- -. -.- ... --..-- ... .- -. - --- ... ....

Thanks Santosh however, I don't think this is an exchange issue either. When Outlook disconnects from exchange, the user also loses connection to the mapped drives. (these drives are mapped using the NET USE command in a startup script). Other application which connect to SQL Server also hang. i.e. Dynamics GP. If I try to remap the drive by right clicking my computer, the PC will not connect to the network share, however I can browse to the share by entering the unc path in the run box

Just a thought ! unjoin and rejoin user machine on to the domain and see if that makes any difference. Also, try recreating the existing user profile.I do not represent the organisation I work for, all the opinions expressed here are my own. This posting is provided "AS IS" with no warranties or guarantees and confers no rights. - .... .- -. -.- ... --..-- ... .- -. - --- ... ....

The user profile has been re-created twice. And the machine has also been swapped with a clean machine, newly joined to the domain. When the profile was re-created, the only documents transferred to the new profile were that on the desktop, my documents and the NK2 file for outlook.

I am not sure however, I still think there is a co-relation between newly created user ID and old mail box attached to it. Apart from this, I am clueless what else to suggest. I do not represent the organisation I work for, all the opinions expressed here are my own. This posting is provided "AS IS" with no warranties or guarantees and confers no rights. - .... .- -. -.- ... --..-- ... .- -. - --- ... ....

Hi, I agree with Mr.X, as the user faces issues with exchange, mapped drives and other application, I'm sure the problem is some thing local to user and his user profile. Are you using roaming profiles? Can you try deleting the user's local logon profile and recreating it .Regards, Rafic If you found this post helpful, please give it a "Helpful" vote. If it answered your question, remember to mark it as an "Answer". This posting is provided "AS IS" with no warranties and confers no rights! Always test ANY suggestion in a test environment before implementing!

The user profile has been re-created twice. And the machine has also been swapped with a clean machine, newly joined to the domain. When the profile was re-created, the only documents transferred to the new profile were that on the desktop, my documents and the NK2 file for outlook. to narrow down if the outlook disconnect starts the whole thing or if thats just the place where its noticed first, it might be an option to check if it happens as well when the user uses outlook webaccess to work with her mailbox for a few days.

Thanks FZB. I think it may be that outlook is where the issue is noticed first like you said. To eliminate outlook, I will suggest OWA to the user for a few days. The fact that there is no defined frequency to it doesn't help though. Our IT consultant has also suggested running wireshark on the machine to analyse the network traffic and identify any protocol issues. I'll post my findings. Thanks

ye, wireshark or network monitor were the next step, though its easier if you knew if it was eg outlook, you could narrow down the search in the network trace to rpc traffic (http://support.microsoft.com/kb/325930)

OK. Wireshark didn't help. I started a capture but was unable to read the log as the system hangs each time this fault occurs. The user reported the fault at 8.30 this morning and decided to log onto another users PC. The exact same fault happened on the other PC therefore we can definetly rule out Network and Hardware. I'll suggest the user uses OWA in the first instance to rule out the outlook connection to exchange as the trigger.

Hi, Please try to create a new user account for this member to check if the new user account works? If the new account works, you may move the user profile from the old one to the new one. Regards, Arthur Li TechNet Subscriber Support If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here. Arthur Li TechNet Community Support

can you let the user log on to another pc and monitor if everything is flowing normally ? have you tried performing a clean boot,disabling the firewall and Av on the client and I strongly advice you to take advice form the exchange forum and let them know the issue as I have seen lot of times Microsoft premier filed engineers they solve these kind of issues or by posting there you will at-least find a clue http://social.technet.microsoft.com/Forums/en-US/exchangesvrgeneral/threads http://www.arabitpro.com

Hi, I would like to confirm what is the current situation? If there is anything that I can do for you, please do not hesitate to let me know, and I will be happy to help. Regards, Arthur Li TechNet Subscriber Support If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here.Arthur Li TechNet Community Support