Hello everyone. I have a real head scratcher. W have an in house Exchange 2013 server installed on Windows 2012 Standard server. The client side is Windows 7 Pro with Office 2010 installed. The antivirus is AVG 2015 Business Edition and we have GFI Webmonitor installed on the network and GFI Mail Essentials on the Exchange Server. The only change we made to the network is 2 weeks ago we upgraded the GFI Webmonitor. Now to the problem. A week ago one or 2 client started getting the pop-up " Connection to Microsoft Exchange server has been lost. Outlook will restore the connection when possible" then the message "Connection to Microsoft Exchanged restored" This repeats itself every 15-20 seconds. I can ping the server by name and IP address with no packet loss. On the client side I have an event viewer error in the application log "Event 26 Connection to Microsoft Exchange server has been lost. Outlook will restore the connection when possible". no errors in the Exchange Server Logs. I have reset the TCPIP time outs on the client side with no improvement. Now gradually more and more of the clients are experiencing the same pop-ups. Trying to research this problem online is turning up a lot of irrelevant data. Any help would be greatly appreciated.

P.S. This condition does affect the mail flow between the client and server nor the server and the outside world. I have performed a continuous ping to the Exchange Server from the client when the disconnects are happening and there are no dropped packets.

Thanks George.

• Edited by jonnyreb1 4 hours 7 minutes ago

The behavior you describe is can be caused by literally anything between the Outlook client and the Exchange Server services.  Usually the problem is a flak

Hi

To solve the issue of Outlook 2010, please follow these steps: -

• Is the issue affecting multiple users or only one?

Note: - If multiple staff is affected, informs the manager and raise a Severity 2 accordingly.

• Try to Ping the Exchange server from the PC with the issue.
• Check network cable and inform access to other network resources.
• Try restarting PC.
• Try setting Outlook to Work Offline mode and then taking it out of Work Offline mode again.
• Clear the PCs Local Security Log/Logs and then restarts the PC.
• Try an Active Directory (LAN) account password reset/ unlock/ status check. Make sure it has not expired or suspended.
• Create a new Outlook profile via the mail Control Panel and set it to the default.

Thanks and regards