Power Automate Cloud Flow Causing “Page Unresponsive” Error While Editing

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Posted on by KJ-14050512-0

Hello everyone,

For the last 24 hours, I have been facing an issue with Power Automate. I have been using Power Automate for the last 10 months with UK IDs, but right now whenever I open my cloud flow and try to edit it, my browser becomes unresponsive and shows a “Page Unresponsive” error.

I have already tried:

Multiple browsers
Incognito mode
Clearing cache

But I am still facing the same issue.

I checked the browser inspect console and noticed several API errors such as:

Unauthorized
Not Found
Forbidden

Because of this, I am unable to edit my Power Automate flows properly.

Does anyone know what might be causing this issue or how to resolve it? Any help would be appreciated.

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Using flows

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David_MA 14,956 Super User 2026 Season 1 on at

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Based on the error message you are getting, it sounds like a permissions issue. Is your flow located in the default environment? If so, all users can access the default, but your organization can remove licensing and prevent you from creating and editing flows.

Go to the environment and check your licenses under settings:

You may also want to check with your IT department that they didn't disable Power Automate in your account.

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eetuRobo 4,565 Super User 2026 Season 1 on at

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Are you using new designer or old one? If you have new designer enabled try switching that off and see if that helps.

The new designer has some great features and can be quicker in some ways but its also much more unstable in my experience. Especially if you have multiple flow editors open in different tabs or if the flow is big.

How big is your flow? Does it have a ton of actions? Does it have a lot of nested conditions / scopes / loops? If so I think optimizing it by removing unnecessary conditions / apply to each loops and such. Maybe break the flow into smaller parts in child flows.

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David_MA 14,956 Super User 2026 Season 1 on at

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Are you also getting an out of memory error? If so, it may be related to this: 6356365 | Power Platform admin center. Suggested to use the classic designer instead. I cannot find the post, someone said a patch is supposed to be pushed this weekend.

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KaineS 2 on at

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I get the same issue with a large flow, after trying to raise a support ticket it referred me to:
Issue ID 6297582

https://admin.powerplatform.microsoft.com/support/knownissues/6297582

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CU03060252-0 2 on at

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I have the same issue. My flows freeze when I open them to edit in the new designer. They seem to work ok in the legacy designer. I noticed this in the last couple of days. These flows are in a solution and I tried private mode, different browsers (Edge & Chrome), different tenants, multiple solutions.

I wonder if there has been any recent changes/releases that has caused this?!

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