web
You’re offline. This is a read only version of the page.
close
Skip to main content

Announcements

News and Announcements icon
Community site session details

Community site session details

Session Id :
Power Platform Community / Forums / Power Automate / 400-error & BadRequest
Power Automate
Unanswered

400-error & BadRequest

(0) ShareShare
ReportReport
Posted on by 3

The flow build and used for more than 2 year without any error, these issues happen yesterday and I have searching all over the places for a solution. Please help:

 

Victoriamm38_1-1670543248786.png

 

Victoriamm38_0-1670543183058.png

 

Output - Body: 

{
  "error": {
    "code"400,
    "source""asia-001.azure-apim.net",
    "clientRequestId""04f7370e-a6b3-4150-bc63-2cd6058b3162",
    "message""The response is not in a JSON format.",
    "innerError""<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\"\"http://www.w3.org/TR/html4/strict.dtd\">\r\n<HTML><HEAD><TITLE>Bad Request</TITLE>\r\n<META HTTP-EQUIV=\"Content-Type\" Content=\"text/html; charset=us-ascii\"></HEAD>\r\n<BODY><h2>Bad Request - Request Too Long</h2>\r\n<hr><p>HTTP Error 400. The size of the request headers is too long.</p>\r\n</BODY></HTML>\r\n"
  }
}
 
Outout - Header: 
{
  "Timing-Allow-Origin""*",
  "x-ms-apihub-cached-response""true",
  "x-ms-apihub-obo""false",
  "Date""Thu, 08 Dec 2022 09:28:07 GMT",
  "Content-Length""592",
  "Content-Type""application/json"
}

 

Categories:
I have the same question (0)
  • Expiscornovus Profile Picture
    33,876 Most Valuable Professional on at

    Hi @Victoriamm38,

     

    Can you share a bit more information about your setup? For example, which action is showing the error and what connector are you using?

     

    Are you by any chance using a ToDoIst action/connector in your setup?

     

    Recently I saw a similar thread about that on these forums:

    https://powerusers.microsoft.com/t5/Using-Flows/Todoist-Flows-Failing-JSON-Errors/m-p/1911832

     

  • Victoria_mm38 Profile Picture
    3 on at

    Hi @Expiscornovus ,

     

    My flows is very simple:

     

    Victoriamm38_0-1670608450576.png

    It shown the error message like following:

     

    Victoriamm38_1-1670608577755.png

    Since it happen my flows never triggered and run whenever a file is uploaded into the onedrive folder.

     

    Please help.

     

    Thank you!

  • Expiscornovus Profile Picture
    33,876 Most Valuable Professional on at

    Hi @Victoriamm38,

     

    Yes, that looks like a pretty simple setup. The error suggests something is wrong with the When a file is created action. Couple of follow-up questions.

     

    Have you checked the connection, is it still ok? Which folder did you use in the trigger action. The root?

     

    Have you configured a trigger condition in the settings of the trigger action? If so, can you share that expression?

Under review

Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later.

Helpful resources

Quick Links

Season of Sharing Community Challenge Launch!

Jump in, show your community spirit, and win prizes!

Kudos to our 2025 Community Spotlight Honorees

Expanding mentorship, skilling, and AI innovation

Congratulations to the May Top 10 Community Leaders!

These are the community rock stars!

Leaderboard > Power Automate

#1
Valantis Profile Picture

Valantis 481

#2
11manish Profile Picture

11manish 278

#3
David_MA Profile Picture

David_MA 276 Super User 2026 Season 1

Last 30 days Overall leaderboard