We recommend using Outlook in Cached Exchange Mode. If you choose to run in Online Mode instead, in some cases, firewall software interferes with Outlook's ability to effectively communicate to the Exchange server. This can result in sluggish performance in Outlook overall, particularly in conjunction with ClearContext scoring and project assignment functionality. Add Outlook to your firewall's list of accepted programs to mitigate this issue. For users of Windows XP SP2 native firewall software, this is done as follows:
- Go to Start > Control Panel and run Security Center
- Click on Windows Firewall and the Exceptions Tab
- Click Add Program
- Select Microsoft Outlook if it is listed, if not click Browse
- Go to C:\Program Files\Microsoft Office\Outlook xx (where xx = Outlook version number) and select Outlook.exe
- Click Open, OK, OK, and close the Control Panel