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New Member

Approval Flows Fail for the past couple of days

I created multiple flows with "Start an Approval", unfortunately they have all been failing with the following error

InternalServerError. The request failed. Error code: '500'. Error Message: 'BadGateway'.


I tried a very simple one which is just a daily recurrence and it still fails

Community Support
Community Support

Hi @mohamedcherifmo,


Could you please share a screenshot of your flow's configuration?

Further, could you please show a bit more about the "Start an approval" action within your flow?


I have made a test on my side and don't have the issue that you mentioned. The HTTP 500 error is a temporary or transient failure, please click or tap Resubmit to try your flow again to check if the issue is solved.


In addition, please check if you sent the approval email to the users who are not in your Office 365 group or organization using "Start an approval" action. Sending approval email to users who are not in your Office 365 group or organization is not supported in Microsoft Flow currently, if you would like this feature to be added in Microsoft Flow, please submit an idea to Flow Ideas Forum:


Also please consider take a try to clear cache of your browser and try your flow again to check if the issue is solved. 


Best regards,




Community Support Team _ Kris Dai
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Hello, Although the creator of this thread didn't reply, I also have the same problem. I just wanted to create a simple approval workflow for testing. I'm running a trial flow account in a trial Sharepoint (e3) account with the following setup, the second screenshot shows the error after execution. It happens all the time. I'm surprised you would need to clear any cache in your browser as everything is expected to happen in the server, is the Approval server broken?






























New Member

I just ended up creating a new environment. Once flow was upgraded my old environment didnt have the same issue anymore

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