Power Apps

Canvas App shows “Page Unresponsive” for some users during load – works fine for maker/admin

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Posted on by SB-01070651-0

I have a Power Apps Canvas App deployed in a client’s environment.

Issue

For some client users, while opening the app, the browser shows a popup:

“Page Unresponsive – Wait / Cancel”

Clicking Wait multiple times eventually opens the app, but it takes a long time.
The issue does NOT occur for me (app maker / admin user).
The same environment works fast for my account, but is slow for other users.

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WarrenBelz 155,262 Most Valuable Professional on at

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Hi @SB-01070651-0,

What code do you have at App OnStart and your landing screen OnVisible ?

Is anything here a collection (how big?) or a non-delegable query ?

Do all users have read/write permissions to all attached data sources ?

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WarrenBelz 155,262 Most Valuable Professional on at

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Hi @SB-01070651-0,

A quick follow-up to see if you received the answer you were looking for. Happy to assist further if not.

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SB-01070651-0 6 on at

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Hi @WarrenBelz
Sorry for the very delayed response
OnVisible of the screen and OnStart of the app there were very less code and no big collections
All users have access to the data sources
I removed the popup using command prompt (Run as administrator)
which helped me as every time it rechecks permission for each and every connection i used which leads to consume lot of time so removing popup helped me as it checks the permissions at very first time and then on every refresh or visits, it directly opens the app

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11manish 2,028 on at

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The “Page Unresponsive” issue occurs because end users trigger heavy synchronous startup processing combined with connector authentication and permission

checks, which block the browser thread.

Maker accounts don’t experience this as much due to caching and elevated access.

The solution is to minimize OnStart logic, defer data loading, use concurrent execution, and reduce connector calls so the app loads progressively instead of

blocking the UI.

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