Custom Teams app works in browser app but not in desktop app

KevinZhang888 

I did get this working... the SharePoint URL cannot be used directly.  There are a couple of things that you will need to manually update in the manifest or in App Studio.

1. When configuring your tabs, use this format for contentURL and websiteURL:

contentUrl = {{siteUrl}}/_layouts/15/teamslogon.aspx?SPFX=true&dest={{sitePath}}

websiteUrl = {{siteUrl}}

The missing key here is the use of "/_layouts/15/teamslogon.aspx?SPFX=true&dest=".

Lets use the contoso url for example, https://contoso.sharepoint.com/sites/ContosoHub. Instead of just using this siteUrl directly, which is what I had previously done, the content url will now be:

https://contoso.sharepoint.com/sites/ContosoHub/_layouts/15/teamslogon.aspx?spfx=true&dest=/sites/ContosoHub

2. The second part to this is setting the "Web app single sign-on" properties.

AAD application ID: 00000003-0000-0ff1-ce00-000000000000

Resource Url: {{subdomain}}.sharepoint.com

Again, using contoso, the Resource Url would be: https://contoso.sharepoint.com

and use the same AAD app ID that I noted above.

I hope this helps.

Thanks.

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Raul Hernandez