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Brian Top-Rasmussen

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Microsoft Teams add in fails in Outlook for Office 365

Case:

Multiple Windows 10 (Version 1809 (OS Build 17763.557)) machines with Outlook for Office 365 MSO (16.0.10730.20348) 32-bit and Microsoft Teams 1.2.00.17057 (64-bit)
Both "old" and completely new installed machines are experiencing Teams add in failure, when using Outlook.

Outlook will shutdown and restart automatically, without any error messages.
The only "error" is this entry in the Event viewer:

Add-in execution error. Outlook crashed during the 'Open' callback of the 'ItemEvents_10' interface while calling into the 'Microsoft Teams Meeting Add-in for Microsoft Office' add-in.

Disabling the add in solves the problem, but is not an option, as the company is replacing S4B with Teams, and therefore needs the add in.
It is worth noticing that the machines are installed via SCCM, and we have a lot of other machines, that are not experiencing this issue.
There dont seems to be a connection between the shutdowns. They just happens randomly.

What we have tried so far:

Disabling ForcePoint Websense
Installing Teams 32-bit version instead of 64-bit
New Outlook profile
New Outlook OST file

Any help or ideas on how to solve this problem is much appreciated :-)
Avatar of Kundan Gupta
Kundan Gupta
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Hello Brian,

What is the update channels are being used in Office365?
Try to uninstall VS 64X component.
Fresh install MS Office pro plus from Office365 portal.

Regards
Kundan
https://teams.microsoft.com/downloads

You should install Microsoft Team 32 bit instead of 64 bit.
Avatar of Brian Top-Rasmussen
Brian Top-Rasmussen

ASKER

@Jackie Man
We have tried installing the 32-bit version of Teams - same issue persists!

@Kundan Gupta
I have now re-installed MS Office from the portal.office.com - awaiting user feedback.
ASKER CERTIFIED SOLUTION
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Jackie Man
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@Jackie Man

Hmm okay, I thought it would be enough to disable Websense. I will try uninstalling it on a couple of machines and test.
After un-installing ForcePoint Websense on 2 machines, they have not experienced any Outlook crashes.

They have only tested for 2 days, but so far so good.

Looks like we have to look into excluding Outlook.exe + the addins DLL's in the ForcePoint Webportal (i think)