Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.
One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.
1. Reset the Outlook toolbar template. With Outlook close, do a search for and rename outcmd.dat file. Restart Outlook. Do the same for outlprnt file.
In Windows XP Outcmd.dat is located in C:\Documents and Settings\<user>\Applicatio
2. Register an important Outlook files. If using Windows xP, go to Start > Run and type regsvr32 OLE32.DLL and hit OK.
If using Vista and you get an error, run regsvr32.exe from an elevated command prompt. To get an elevated command prompt, right-click on the "Command Prompt" shortcut and select "Run as Administrator".
3. If no joy, an addin could be corrupt. Disable Outlook Addins. Go to Tools > Trust Center > Add-Ins disable the addins.
If Outlook does not open, go to Start > Run - and type outlook /safe
4. Check if an external program running in the background is interfering with Outlook. Check Firewall, antivirus and other security programs, Yahoo and Google toolbars, and desktop search programs. Disable these programs one at a time.
5. If the problem is only one user, create a new Outlook profile.
http://support.microsoft.com/kb/829918
6. If no joy, reinstall Outlook. Go to Add/Remove Programs and highlight Microsoft Office. Click on Install/Uninstall. A menu will pop allowing you to choose repair or reinstall.
Hope this helps!
war1