>After updating the windows 10 OS to Fall Creators update, MSMapi stopped working.
>
>I get it to the point where Outlook shows the security message, after clicking on Allow, nothing happens anymore.
>
>AERROR() shows 1429 - Invalid session (from Mapimessages). I wonder if someone has seen this problem before and knows a solution?

I used to have the creator version on my laptop, but after a whole series of problems, I gave it up a few weeks ago. Bought a 960GB SSD for C: and installed Windows 10 Pro 64-bit on it. Spent the next four days (!!) installing and configuring all my favorite applications. My laptop now is visibly so much faster than it was before I gave up on the creator version, I was very surprised about the speed increase.