Authentication error for guest user to open power apps

[AA03]

Hi, I have created a power app to update the items of a sharepoint online list. I have added external user to my tenant and shared the site with edit permission. I shared the PowerApps with him. But when he is trying to open and sign to the SP connector he is getting the following errors. Please help.

Error We weren't able to add this connection. Please try again. An error occurred during authentication. Session ID: e1783eb7-4335-4f1f-a6ff-c9ccdb618d5e

[v-siky-msft · Accepted solution]

Hi @AA03 ,

I used to make the same app, and I also encountered this problem the first time I Shared it with Guests, but the authentication error is automatically fixed the next day, and everything worked as expected.

I think it will take a while to synchronize the Guest user's permissions, so please be patient. At the same time, please also let the guest clear the browser cache to avoid external factors.

Hope this helps.

Sik

[AA03]

Thanks for your response but I am trying for last three days without luck 😐.

[AA03]

Thanks @v-siky-msft . It started working.