MS Outlook 'Messaging Interface Error'

[spectra]

I am using MS Outlook 2002 and have started receiving the error message 'The Messaging Interface has returned an unknown error. If this persists, restart Outlook'.

This error occurs when I try to delete the messages that are sitting in the Sent box - they have been sent multiple times already but will not transfer to Sent.

I also have about 140 odd emails sitting out there waiting to be downloaded to the inbox which isn't happening.

I have tried running the detect and repair function but to no avail.
I have also deleted that backup .pst file as it was approaching 2gb.

I've restarted Outlook, restarted Window and still nothing is happening.

Is there another .pst file I need to delete other than the back up file that I manually run?

Thanks in advance.

 

[Osiris]

do you have all the service packs applied?

 

[spectra]

Yes. All SPs and updates from MS Office

 

[Osiris]

delete the outlook profile and make a new one, usually that fixes most errors

 

[spectra]

Does that mean that I'll lose all the 140 new emails waiting to come in?

 

[Osiris]

you have an exchange server running right? if you do, i dont think you will but im not going to say you wont. can you sign in to another pc and check them out then delete the profile?

 

[spectra]

We don't run an Exchange Server here but I might be able to get access through the mail server - thanks for the thought.