Greetings, Setup: Exchange 2003 on Windows 2000 box Domain Controller and Global Catalog on Windows 2000 Outlook 2003 on WinXP SP1 Issue: Occasionally a user receives the following message from Outlook "Outlook 2003 is trying to retrieve data from the exchange server". If they attempt to do any functions inside of Outlook during this time, Outlook is locks up on them. It doesn't happen to the same user each time and usually only occurs for a few minutes. I was wondering if anyone knew the cause. Sometimes it happens when someone is performing an Outlook related task and sometimes it happens when Outlook is minimized. The affected user can access internet and other servers fine during the issue. DNS appears fine. The Exchange server and DC/GC ping fine with all Reponses <1ms. Other users can access the server and do not have any issues during that time. There are no events in the log indicating an issue. This is more an annoyance then a real problem but any help being able to pin things down would be appreciated. Thanks for any help, Liz Thompson CCBC Catonsville