The 1,000,000 Dollar Question about Fixing MAPI
Posted on 2011-02-24
I do email migrations from one system to another, and often people want to go to Microsoft Outlook. That works most of the time. Sometimes, people cannot migrate into Outlook because GroupWise was installed on this same machine, and GroupWise uses its own version of MAPI. Sometimes, a reinstall of Outlook prevents MAPI conflicts, but other times it does not. If I completely uninstlal the GroupWise client from a machine and leave Outlook, I could still have connection problems to Outlook because GroupWise left its mapi files behind. Sometimes, if I then uninstall Outlook and reinstall it then I have no connection problems. But, this is not true all of the time.
I need to learn more about MAPI. If there are problems with MAPI because of incompatible versions e.g. GroupWise and Outlook on the same machine, what is the best way to make sure MAPI is the correct one for Outlook?
Also, it seems that sometimes that Windows will keep its own version of MAPI and fight with GroupWise or even Outlook if the version has changed.
What are the files related to MAPI? If I need to fix it (without running fix mapi) what can I do to ensure the MAPI version is the compatible version for Outlook without having to reinstall Outlook or run Outlook repair, which does not always work?
Good luck with this one LOL.