Forum Discussion

Copper Contributor

Jul 23, 2019

Incoming Webhooks stopped working?

We just noticed that the incoming webhooks feature broke sometime around 07/23 12:50am UTC. The webhook returns with HTTP 200 OK, and the only error message is a .NET exception message without the st...

microsoft teams

MattShields74

Copper Contributor

Aug 12, 2019

Ines_Trenz_HIRSCHTEC After digging around it looks like Incoming Webhook (and all apps) are added to the account level O365 blacklist. I logged into the Office admin -> Admin Centers -> Teams -> Teams Apps -> Permission Policies -> Org-wide app settings -> Blocked apps, and click X on the Incoming Webhook. After this I needed to wait ~2-4 hours. It seemed that some channel webhook's were quicker to come back than others.

tmorell

Copper Contributor

Oct 07, 2019

I have checked the Org-wide app settings and there are no blocked apps.

Webhooks were working properly until 10/04/2019 and just noticed that they are not working today 10/07/2019.

The POST request returns 200 OK, but with the following message: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.

Thanks!

kains4
Copper Contributor
Oct 08, 2019
Hello
Did u solve this problem?
I have same issue like u.
The most interest thing is that other channel's connector doesn't have any problem.
Specify channel connector has that issue.
- tmorell
  Copper Contributor
  Oct 08, 2019
  kains4 I just checked this morning and they connectors are working again.
  - kains4
    Copper Contributor
    Oct 10, 2019
    tmorell I also found that the connector had a problem was working.
    But I didn't do any action for fixing this issue.
    I think that this issue just depend on ms service.
- MattShields74
  Copper Contributor
  Oct 08, 2019
  kains4 Even though no one at our company had made any changes to our O365 Teams settings, I had to go into the O365 Admin, go to Teams Admin Center, click Teams Apps, Permission Policies, Org-Wide App Settings, and unblock the Incoming Webhook. It seems like MS might have rolled out a massive change.
  
  One thing I wish is that I could get an email or subscribe to a feed of any changes both in the future and when they are rolling out. We're building a number of internal apps around Teams and it would be nice to know if MS is making changes that will break our apps. In this case we stopped getting internal notifications and thought everything was fine.