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502 'BadGateway' when running UI flow for web from flow

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Posted on by Community Power Pla...

I am trying to run a simple UI flow by using 'Run a UI flow for web' connector in flow. I have the On-premise gateway, have the connection with it, can see it under Data -> Gateways and the connection under Data -> Connections is also there and connected.

When running the flow it takes about 2 minutes until it fails with 502 'BadGateway' error.

In On-premises data gateway App status is 'Online and ready to be used', under Diagnostics tab i run Network ports test and it shows 'Completed (Successful)'

I must say that I am doing it from freshly made Environment(Trial) since i wasn't able to get the Gateway connection on my Default environment (wasn't showing any gateways in dropdown).

Any advice?
Thanks!

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Using flows

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RyanBrubaker124 3 on at

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We had the same issue today…

Fix
Make sure your Data Gateway is not in a cluster - clusters are not supported by UI Flows
Make sure Chrome is installed on the Data Gateway
Download and install the UI Flows Installer (Google it) on the Data Gateway and make sure it is running (you'll see a little blue UI Flows icon in the system tray)
You must leave the Data Gateway server logged in (disconnected) as the user credentials running the UI Flow

That's what fixed it for us. Not ideal, but it worked. I hope this helps.

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Community Power Pla... on at

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Hi @RyanBrubaker124 , thanks for replying!

I don't remember making any clusters for my Data Gateway.

What do you mean by making sure Chrome is installed on the Data gateway? Also, what do you mean by installing UI Flows Installer on the Data Gateway?

I don't remember installing anything ON anything specific. I have Data Gateway installed by just doing everything default. Same with UI Flows installer. It also prompted to get PowerAutomate chrome extension and i got also selenium extension.

Also - "You must leave the Data Gateway server logged in (disconnected) as the user credentials running the UI Flow".
How can i do that? When i run my flow that's failing i have my gateway open and logged in, UI Flows icon is there in the system tray, PowerAutomate chrome extension is enabled.

Thanks in advance.

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tony_hernandez 14 on at

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Following this, I have the same issue.

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Community Power Pla... on at

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Same issues here.

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DerekHurley 56 on at

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Also same issue here, any update on how to fix?

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dshamsi1 14 on at

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Same issue

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Community Power Pla... on at

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Facing same issue 😟

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Jaison 2 on at

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Same issue. I'm guessing since this is in preview we wont get a response?

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Verified answer

DerekHurley 56 on at

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Hi @Anonymous ,

I spoke with Microsoft about this issue, they are aware of it and gave this fix:

"Product team mentioned that , unfortunately It is a known issue of UI Flow agent when user use AzureAD domain as their on premise machine windows auth.
And they provided below work around to fix this issue.

please use other school or work account domain if they has.
Or
please go to C:\Program Files (x86)\Microsoft UI flows\edit the file Microsoft.Flow.RPA.Agent.exe.config
With below entries:
<add key="Microsoft.Flow.RPA.Agent.EnforceWindowsAuth" value="false" />
Only administrator can modify the files in that folder, so you need to run your text editor in Admin Mode to be able to edit them."

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Community Power Pla... on at

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Hi @DerekHurley ,

I do not have access to any other account and changing the Microsoft.Flow.RPA.Agent.exe.config file did not solve the problem for me. 😞
Did changing the line in config file to false alone solve the issue for you?

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