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SharePoint List Customised Form "Sign in required"

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Posted on 11 Oct 2023 06:01:57 by GordenF

Hi, currently experiencing an issue in SharePoint for external users (guests). I have a customised PowerApps form built into a SharePoint list. Whenever a list item is selected the custom form would open normally for internal users. But for external users they would receive a "Sign in required" prompt. After clicking "sign in", the pop up will disappear and can continue as per normal. But would once again appear when selecting a different item or closing and reopening the same item. This issue only started occurring a couple months ago.

I had the external users test using various browsers and still the same issue persists. I'm wondering if there was a recent update which required external users (guests) to go through this process?

Note: They have no issue viewing the SharePoint list itself, just for the customised form.

Thanks

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ANB 7,213 Super User 2025 Season 2 on 14 Oct 2023 at 06:11:11

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Re: SharePoint List Customised Form "Sign in required"

HI @GordenF , Just for the confirmation, Have you checked this?
https://learn.microsoft.com/en-us/power-apps/maker/canvas-apps/customize-list-form

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Thanks,
ANB

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GordenF 2 on 01 Feb 2024 at 01:37:04

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Re: SharePoint List Customised Form "Sign in required"

Hi @ANB, The external users all have user type guest and edit access. They are only required to use the form and not create.

Update: The issue has gotten worse, where the sign-in prompt would now keep appearing every few seconds after clicking sign in.

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