X1OutlookService32.exe - The process was terminated...

The Windows eventlog shows many 'Errors' with regards to Outlook plug-in X1OutlookRTIAddin32.dll

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Why is that?
How to solve it?

I used: X1Search x64 v8.5.2 build 6001si.msi
On WIndows 10 x64
Office 2016 is 32bit

Maybe x64 of X1Search has an issue with the 32bit Outlook add-in?
Maybe I should have used the 32bit installer then?

Thanks!

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