Unable to add a Power App as Teams tab (Critical!)

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Posted on by VilPel

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Hello community,

Just a couple of days ago, I started facing this issue in my tenant when trying to add a Power App as a Teams channel tab in Teams.

"This app does not exist, or you do not have access to it. Please contact an administrator."

I am the global admin so it's not a permission issue. This happens across all teams, channels, users and apps in our tenant. We have seen the same thing happening in other tenants too.

These are Power Apps created from the maker portal () and added to Teams. No issues in the past, this started happening all of a sudden.

Has anybody else faced the same issue?

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PB-21100718-0 8 on at

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Unable to add a Power App as Teams tab (Critical!)

There must have been a change from Microsoft in the last hour. The error is no longer present in our system. The app works again without having changed anything. Please check this for yourself.
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mmbr1606 12,104 Super User 2025 Season 1 on at

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Unable to add a Power App as Teams tab (Critical!)

hey

have u tried to use the website option when adding new tab and insert the url of the powerapp there?

if it helped please mark as verified answer

cheers
MV-23101239-0 4 on at

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Unable to add a Power App as Teams tab (Critical!)

We have exact the same issue. Starting the same period in October.