Showing results for 
Search instead for 
Did you mean: 
Not applicable

Flows stop triggering unexpectedly Bad gateway 502?

Hi, I've had a number of flows stop working all of a sudden with little information on what is at fault. The flows have been working fine and were not modified aroudn the time they stopped working. The only nugget to go off is the error 'bad gateweay 502' which is reported in a some of the recent failed runs.


I'm unable to trigger the flow (sharepoint new item is created or modified) so i'm stumped as to why it is not triggering. I've created a simple flow in the same account with the same trigger, that works the first time then doesnt work any more...


I've tried copying the flow to another account but that doesnt work more than once either!


I've tried copying the flow and deleting the original (because i was concerned there were quite a few instances of the flow running) but that didnt work either.


Really at a loss as to what is wrong and this is having a significant impact on our operations. if anyone has any pointers or guidance i'd appreciate hearing them.


The actions contained in the flow are:

Sharepoint update item

Sharepoint get items

Outlook send email

Outlook send email with options





Accepted Solutions

Thanks, everything now back to normal Smiley LOL

View solution in original post

Community Support
Community Support

Hi @Anonymous,


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

Could you please show a bit more about your error message?


I have made a test on my side and the "When an item is created or modified" trigger fires well. My flow's configuration as below:6.JPG

The flow works successfully as below:7.JPG




Please consider take a try to clear the cache of your browser and re-create your flow to check if the issue is solved.


In addition, please take a try to switch your flow's environment into another one and create same flow within it to check if the issue stills. If the issue doesn't exist in another environment, I think this issue is related to your flow's environment.


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.
Not applicable

hi @v-xida-msft


I've tried making a new flow with the same trigger and 1 action (send me an email) and that did not work either.


I dont think the complexity of the flow is an issue.


I'm trying to rule out parts of the problem today so i'll provide updates as i know more.



Thanks for the response, happy to take any other suggestions!


(I Must confess, i created another post on the same issue before I knew some more about the issue


Not applicable

So, i've just re-tested it on the list thats been problematic (with just over a thousand items on it, with versioning on) and i've received a 502 error. Interestingly, the best way to see this error was to have the flow in the 'save' view and then trigger it in the background. When you do this you're presented with the error information but nothing is displated in the 'run history' view...


Here is the text from the failure


When an item is created or modified1sFailed

Site Address
List Name
Status code
Wed, 14 Feb 2018 11:24:12 GMT
application/json; charset=utf-8
"status": 502,
"message": "Unknown Error\r\nclientRequestId: b5d75e14-82ff-4df7-9f46-8171d554ad8b\r\nserviceRequestId: ba634a9e-5022-5000-fea6-4be4bd54071b;ba634a9e-3027-5000-fea6-44d09d89ba5b",
"source": "https://'company'",
"errors": [


and here is it as an image...


Kudo Commander
Kudo Commander

i just had this same issue for 32 of my flow runs yesterday 😞   Bad Gateway 502 ...  The Flow used to run successfully without this error.  


Body of Output in Bad Gateway error :


  "error": {
    "innerError": {
      "message""This won't work because it would move cells in a table on your worksheet.\r\nclientRequestId: 99ad0121-91b5-4483-a1cd-68b32827746b",
    }  }


flow Bad Gateway 502 Error.JPG

I'm having the same issue now with the Badgateway 502 error. 


The function is Get User Profile (V2).


Top of the error messages are:

  "error": {
    "message""The response is not in a JSON format.",


The same flow was working just a few days ago. 


Could it be related to a recent release?

Just ran into the 502 bad gateway today as well using Azure AD - Create User. Was working yesterday



Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

                        [NullReferenceException: Object reference not set to an instance of an object.]
                        Microsoft.Online.AggregatorService.Common.Gateway.AgsIndexConfigProvider.GetConfigVersionNumber(String configType, String configId) in d:\\bt\\932496\\repo\\src\\dev\\Common\\Gateway\\AgsIndexConfigProvider.cs:64
                        Microsoft.Online.AggregatorService.Common.Gateway.ConfigurationProvider`1.GetConfigurationImp(String identifier, Boolean useCache) in d:\\bt\\932496\\repo\\src\\dev\\Common\\Gateway\\ConfigurationProvider.cs:389
                        Microsoft.Online.AggregatorService.Common.Gateway.ConfigurationProvider`1.GetConfiguration(String identifier, Boolean useCache) in d:\\bt\\932496\\repo\\src\\dev\\Common\\Gateway\\ConfigurationProvider.cs:108
                        Microsoft.Online.AggregatorService.Common.Gateway.GlobalContext.TryGetConfigurationItem(String identifier, TConfigItem& item) in d:\\bt\\932496\\repo\\src\\dev\\Common\\Gateway\\GlobalContext.cs:324
                        Microsoft.Online.AggregatorService.Common.Gateway.GlobalContext.GetAgsRootConfig() in d:\\bt\\932496\\repo\\src\\dev\\Common\\Gateway\\GlobalContext.cs:276
                        Microsoft.Online.AggregatorService.Common.ThrottleClient.GetThrottleEndpoint() in d:\\bt\\932496\\repo\\src\\dev\\Common\\Throttling\\ThrottleClient.cs:577
                        Microsoft.Online.AggregatorService.Common.ThrottleClient.Initialize() in d:\\bt\\932496\\repo\\src\\dev\\Common\\Throttling\\ThrottleClient.cs:129
                        Microsoft.Online.AggregatorService.WebService.Global.Application_Start(Object sender, EventArgs e) in d:\\bt\\932496\\repo\\src\\dev\\WebService\\Global.asax.cs:120
                        [HttpException (0x80004005): Object reference not set to an instance of an object.]
                        System.Web.HttpApplicationFactory.EnsureAppStartCalledForIntegratedMode(HttpContext context, HttpApplication app) +535
                        System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +166
                        System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +169
                        System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +372
                        System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +329
                        [HttpException (0x80004005): Object reference not set to an instance of an object.]
                        System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +525
                        System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +118
                        System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +708

Hi there. This seems to be a transient issue. The Azure AD connector seem to be functional now. There could have been some backend updates.


Wishing you the best.

Thanks, everything now back to normal Smiley LOL



Since two weeks I am also experiencing a similar issue for one my flows. 


  "error": {
    "innerError": {
      "message""A task was canceled.",
All my other flows seem to be executing properly, this experience has started during the latest advisory for SharePoint and OneDrive for Business. 

I'm getting the issue too... Update Item action.

This post is marked as solved, so probably should create a new one.

Frequent Visitor

I am facing this problem today. @ MS Flow team, any hint? resolution time ?

Ok, in my case the 'bad gateway' error is missleading. Its basically because of the changes I made in HTTP Request action query. When I revert the change the flow works fine. So, the take away is, try reverting your recent change, if you have made any and see. 

Resolver I
Resolver I


We just had the 502 BadGateway errorin several flows of ours. In all cases HTTP action was to call another MS Flow in the same account. It failed several times during 18 hours starting from last night and then it returned to normal without any changes made to flows.


Wonder how could we work around such failures. Any idea?


Thank you,



Not applicable

I am getting the "BadGateway" error today.


The flow in question is triggered by flagging an email.

I have been using this flow for over 6 months with no problems and have not made any changes to it.


Is there some explanation as to why this is happening?

I got a 502 Bad Gateway in Flow ... in this case I was using HTTP Request action to create a site in SharePoint.  My problem ended up that I was trying to create site where there was already an existing site at the same URL.  So "Bad Gateway" not very helpful.  Must be generic error that can have many possible actual causes.  

Not applicable

This just suddenly happened this week (Oct 1 2019) again!  Does anyone have a resolution?  I have monthly workflows that run at the beginning of each month and today, they suddenly got this 'Bad Gateway' error!

Same here... started getting bad gateway error after the content was approved.


I am having the issue today. If it's an issue with Azure, it would be nice to know the status.


The seems to be down?

New Member

There seem to be a bunch of these threads around that all have the solution of "just wait, it'll fix itself" 

I have had the following error for 3 weeks straight so please let me know how much longer I need to wait. This is on a trigger of "new item created in share point list"


Tech details:

"code": 502,
"message": "Unable to connect to the remote server",
"source": "",
"path": "forward-request",

Helpful resources


Community will be READ ONLY July 16th, 5p PDT -July 22nd

Dear Community Members,   We'd like to let you know of an upcoming change to the community platform: starting July 16th, the platform will transition to a READ ONLY mode until July 22nd.   During this period, members will not be able to Kudo, Comment, or Reply to any posts.   On July 22nd, please be on the lookout for a message sent to the email address registered on your community profile. This email is crucial as it will contain your unique code and link to register for the new platform encompassing all of the communities.   What to Expect in the New Community: A more unified experience where all products, including Power Apps, Power Automate, Copilot Studio, and Power Pages, will be accessible from one community.Community Blogs that you can syndicate and link to for automatic updates. We appreciate your understanding and cooperation during this transition. Stay tuned for the exciting new features and a seamless community experience ahead!

Check Out | 2024 Release Wave 2 Plans for Microsoft Dynamics 365 and Microsoft Power Platform

On July 16, 2024, we published the 2024 release wave 2 plans for Microsoft Dynamics 365 and Microsoft Power Platform. These plans are a compilation of the new capabilities planned to be released between October 2024 to March 2025. This release introduces a wealth of new features designed to enhance customer understanding and improve overall user experience, showcasing our dedication to driving digital transformation for our customers and partners.    The upcoming wave is centered around utilizing advanced AI and Microsoft Copilot technologies to enhance user productivity and streamline operations across diverse business applications. These enhancements include intelligent automation, AI-powered insights, and immersive user experiences that are designed to break down barriers between data, insights, and individuals. Watch a summary of the release highlights.    Discover the latest features that empower organizations to operate more efficiently and adaptively. From AI-driven sales insights and customer service enhancements to predictive analytics in supply chain management and autonomous financial processes, the new capabilities enable businesses to proactively address challenges and capitalize on opportunities.    

Summer of Solutions | Week 3 Results | Win free tickets to the Power Platform Conference

We are excited to announce the Summer of Solutions Challenge!    This challenge is kicking off on Monday, June 17th and will run for (4) weeks.  The challenge is open to all Power Platform (Power Apps, Power Automate, Copilot Studio & Power Pages) community members. We invite you to participate in a quest to provide solutions to as many questions as you can. Answers can be provided in all the communities.    Entry Period: This Challenge will consist of four weekly Entry Periods as follows (each an “Entry Period”)   - 12:00 a.m. PT on June 17, 2024 – 11:59 p.m. PT on June 23, 2024 - 12:00 a.m. PT on June 24, 2024 – 11:59 p.m. PT on June 30, 2024 - 12:00 a.m. PT on July 1, 2024 – 11:59 p.m. PT on July 7, 2024 - 12:00 a.m. PT on July 8, 2024 – 11:59 p.m. PT on July 14, 2024   Entries will be eligible for the Entry Period in which they are received and will not carryover to subsequent weekly entry periods.  You must enter into each weekly Entry Period separately.   How to Enter: We invite you to participate in a quest to provide "Accepted Solutions" to as many questions as you can. Answers can be provided in all the communities. Users must provide a solution which can be an “Accepted Solution” in the Forums in all of the communities and there are no limits to the number of “Accepted Solutions” that a member can provide for entries in this challenge, but each entry must be substantially unique and different.    Winner Selection and Prizes: At the end of each week, we will list the top ten (10) Community users which will consist of: 5 Community Members & 5 Super Users and they will advance to the final drawing. We will post each week in the News & Announcements the top 10 Solution providers.  At the end of the challenge, we will add all of the top 10 weekly names and enter them into a random drawing.  Then we will randomly select ten (10) winners (5 Community Members & 5 Super Users) from among all eligible entrants received across all weekly Entry Periods to receive the prize listed below. If a winner declines, we will draw again at random for the next winner.  A user will only be able to win once overall. If they are drawn multiple times, another user will be drawn at random.  Individuals will be contacted before the announcement with the opportunity to claim or deny the prize.  Once all of the winners have been notified, we will post in the News & Announcements of each community with the list of winners.   Each winner will receive one (1) Pass to the Power Platform Conference in Las Vegas, Sep. 18-20, 2024 ($1800 value). NOTE: Prize is for conference attendance only and any other costs such as airfare, lodging, transportation, and food are the sole responsibility of the winner. Tickets are not transferable to any other party or to next year’s event.   ** PLEASE SEE THE ATTACHED RULES for this CHALLENGE**   Week 1 Results: Congratulations to the Week 1 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge.   Community MembersNumber SolutionsSuper UsersNumber Solutions Deenuji 9 @NathanAlvares24  17 @Anil_g  7 @ManishSolanki  13 @eetuRobo  5 @David_MA  10 @VishnuReddy1997  5 @SpongYe  9JhonatanOB19932 (tie) @Nived_Nambiar  8 @maltie  2 (tie)   @PA-Noob  2 (tie)   @LukeMcG  2 (tie)   @tgut03  2 (tie)       Week 2 Results: Congratulations to the Week 2 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge. Week 2: Community MembersSolutionsSuper UsersSolutionsPower Automate  @Deenuji  12@ManishSolanki 19 @Anil_g  10 @NathanAlvares24  17 @VishnuReddy1997  6 @Expiscornovus  10 @Tjan  5 @Nived_Nambiar  10 @eetuRobo  3 @SudeepGhatakNZ 8     Week 3 Results: Congratulations to the Week 3 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge. Week 3:Community MembersSolutionsSuper UsersSolutionsPower Automate Deenuji32ManishSolanki55VishnuReddy199724NathanAlvares2444Anil_g22SudeepGhatakNZ40eetuRobo18Nived_Nambiar28Tjan8David_MA22  

Updates to Transitions in the Power Platform Communities

We're embarking on a journey to enhance your experience by transitioning to a new community platform. Our team has been diligently working to create a fresh community site, leveraging the very Dynamics 365 and Power Platform tools our community advocates for.  We started this journey with transitioning Copilot Studio forums and blogs in June. The move marks the beginning of a new chapter, and we're eager for you to be a part of it. The rest of the Power Platform product sites will be moving over this summer.   Stay tuned for more updates as we get closer to the launch. We can't wait to welcome you to our new community space, designed with you in mind. Let's connect, learn, and grow together.   Here's to new beginnings and endless possibilities!   If you have any questions, observations or concerns throughout this process please go to   To stay up to date on the latest details of this migration and other important Community updates subscribe to our News and Announcements forums: Copilot Studio, Power Apps, Power Automate, Power Pages

Users online (5,224)