Microsoft Flow HTTP Request is Received Fails When Adding Excel or Sharepoint Step

[taylorpsmith]

My Flow is simple. When a HTTP Request is Received, Parse the JSON, Compose from the Parsed JSON and it works flawlessly.

I want to add a step, "Add a row to a table" in Excel. As soon as I do that, the "When a HTTP request is received" stops working. If I remove the Excel step, it goes back to working without issue. I get "There is a problem with the flow's trigger" message. The "learn more" is generic and doesn't address the HTTP request. When I click, "Fix the Trigger", another just generic "BadRequest" with no option of how or what to fix. 

In addition, if I "test" the flow with a previously successful run (from without the excel step), it will work with the Excel step no problem. 

Long story short, when I add the Excel step, it will cause a problem with the HTTP Received trigger but if I remove the Excel step, it works without issue. Any thoughts on this? Thanks!

[mnoah]

Same issue!  What was your solution (if any)?

[taylorpsmith]

@mnoah Unfortunately no solution! I've found that MS Flow has a ton of these quirks.

[mnoah]

Frustrating.  It looks like when you add the Excel connector, it somehow changes the HTTP to force validation to only allow application/json.  So if your service sends something urlencoded or multipart, it fails.

Looks like I'll throw stuff into a list and then have another flow to monitor that list and then update the Excel file.  Ugh!

[mnoah]

@taylorpsmith I submitted a support ticket to MS back in February or March for this and it was finally fixed.  Whether the fix goes out globally or to your tenant I have no idea.  But you may want to check your flows again and see if it works! 🙂 

[Mattw112IG]

Any way to fix this?  I'm having a similar issue.  not with Excel but with something else.  But it was working, then I made changes to my flow now it doesn't work and sender gets http 400 errors.