You have a previous version of the Microsoft Exchange Messaging Service

spgcs used Ask the Experts™
New laptop, Windows 7. Came with trial version of Office 2010. Uninstalled and loaded standalone copy of Outlook 2007 and Office Home & Student 2010. Configured Outlook for Exchange OK however every time Outlook is closed and reopened the profile settings are lost and we receive the error "You have a previous version of the Microsoft Exchange Messaging Service"
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try deleting your Outlook Mail profile.  

and start again and follow the wizzard.


Thanks for the suggestion. Unfortunately we have done this, several times. Each time we reconfigure the Outlook profile it appears ok and then upon closing and reopening Outlook we receive the same error and all settings are lost

we are having the same issues here and are looking for a solution... Willpost back if i can figure this thing out...
I don’t know if you are still having this issue or not but we were untill now. After I posted my comment above I did a little rooting around my machine (which was 1 if 4 having this probem). Anyway, here is what I did:

1)      Uninstalled any version of Office that was on the machine
2)      Rebooted
3)      Searched for all folders called Microsoft Office and Outlook and deleted them
4)      Searched for all files called outlook and deleted them
5)      Rebooted
6)      Installed Office 2007 (mine was enterprise but your’s should be just fine) with a custom install and install EVERYTHING to the machine (not installed on 1st use or any of that).
7)      Rebooted

When I ran Outlook for the first time after all of that, it opened with the wizard and I added my Exchange name and password and etc and it worked fine. Just to make sure, I closed Outlook and re-opened it, restarted my machine and opened it, killed the outlook.exe task and reopened it… All worked fine.
Then I went to the other pc’s that were having the same error and did the same thing – it worked there as well. I would give this a try if you are still having this issue – let me know how it turns out for you.

As for Outlook 2010 – this is not my first rodeo with this software… I tried it when it was in different stages of the beta and now with the final release – this is a really crappy version in my opinion. I have had too many troubles with doing simple things to give this to my users or even recommend it to clients right now… If I cannot figure this thing out and not get errors, I cannot expect for normal users to get it right. Maybe after SP1 or even SP2 will I consider this again.

YMMV – Swim at your own risk


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