List of all apps used in teams inside tenant

[MaciejPietrzak]

Hello,

Company, what I'm responsible for, wants to disable all 3rd party applications in Teams. But before disabling, they want to know, if there's any used in any team. I've found, that I can check apps used in particular Team by providing Team ID and by using Graph API, but I need to check ALL Teams created in tenant for ALL 3rd party apps (or even any apps, I will determine which one is 3rd party one). I have full list of all teams available in my tenant. I need to know how to iterate API query for this list.



Could you please help me? :)

[#2 · Accepted solution]

Here's a sample script I wrote a while back: https://github.com/michevnew/PowerShell/blob/master/Report_Teams_Apps.ps1

More info here: https://www.michev.info/Blog/Post/2829/reporting-on-teams-apps-and-tabs

[#3]

@Vasil Michev  thank you, I've used your idea to create my own solution - I used PowerAutomate (Flow) to generate output file.

[#4]

Hi what is requested to handle this:
$client_secret = Get-Content .\ReportingAPIsecret.txt | ConvertTo-SecureString

I have a registered graph App in the tenant, but what is need to do in addition?

[#5]

That's just an example on how to store the client secret in a more secure way, instead of pasting it in plain text in the script file. If you haven't worked with secure strings in PowerShell, check this article: https://www.pdq.com/blog/secure-password-with-powershell-encrypting-credentials-part-1/
Or you can just replace all that code with your own preferred method to obtain a token.

[#6]

Ok but even if i copy the secret key into the script it doesnt work for me

[#7]

You have to replace the entire "get token" section. Like this:

$tenantID = "tenant.onmicrosoft.com"
$appID = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
$client_secret = "verylongsecurestring"

$body = @{
client_id = $AppId
scope = "https://graph.microsoft.com/.default"
client_secret = $client_secret
grant_type = "client_credentials"
}