Forum Discussion

Copper Contributor

Feb 12, 2024

Solved

Pop out sideloaded app takes long time to load

I have a sideloaded app that load pretty quick (less than 2 seconds) in new Teams. But when i chose to pop out, open in new window, it takes 20-30 seconds to load the same app. This works very quic...

developer

microsoft teams

Prasad_Das-MSFT
Aug 08, 2024
ChristopherEdling , we got update from engineering team stating that, this is happening because the app never initializes the App SDK (i.e. teams-js). While Teams apps are built on the same web technologies as standard web sites, there are some requirements that they need to meet as documented here:
https://learn.microsoft.com/en-us/microsoftteams/platform/tabs/how-to/tab-requirements

This is one of the prerequisites which this app has not implemented:
Within your content page, add a reference to Microsoft Teams JavaScript client library using script tags. After your page loads, make a call to app.initialize(), or else your page isn't displayed.

Just wrapping an existing website in an app manifest does not produce a well-functioning Teams Apps. You need to do some additional work to make your websites integrate well with Teams.

Thanks,

Prasad Das

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If the response is helpful, please click "**Mark as Best Response**" and like it. You can share your feedback via Microsoft Teams Developer Feedback link. Click here to escalate.

Prasad_Das-MSFT

Microsoft

Aug 08, 2024

ChristopherEdling , we got update from engineering team stating that, this is happening because the app never initializes the App SDK (i.e. teams-js). While Teams apps are built on the same web technologies as standard web sites, there are some requirements that they need to meet as documented here:
https://learn.microsoft.com/en-us/microsoftteams/platform/tabs/how-to/tab-requirements

This is one of the prerequisites which this app has not implemented:
Within your content page, add a reference to Microsoft Teams JavaScript client library using script tags. After your page loads, make a call to app.initialize(), or else your page isn't displayed.

Just wrapping an existing website in an app manifest does not produce a well-functioning Teams Apps. You need to do some additional work to make your websites integrate well with Teams.

Thanks,

Prasad Das

------------------------------------------------------------------------------------------

If the response is helpful, please click "**Mark as Best Response**" and like it. You can share your feedback via Microsoft Teams Developer Feedback link. Click here to escalate.

ChristopherEdling

Copper Contributor

Aug 23, 2024

Hi again
I have made some changes to our app and made sure app.initialize() is called in a different place and it seem like the app is functioning better.
I went form about 25 seconds loading time to 1! 🙂

Thanks for the help,
Christopher Edling