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// graph-permissions · TeamsAppInstallation

TeamsAppInstallation.ReadWriteAndConsentForUser.AllMicrosoft Graph permission · High risk

Allows the app to read, install, upgrade, and uninstall Teams apps in any user account, without a signed-in user. Gives the ability to manage permission grants for accessing those specific users' data.

Application permission

High risk

Manage installation and permission grants of Teams apps in a user account. Allows the app to read, install, upgrade, and uninstall Teams apps in any user account, without a signed-in user. Gives the ability to manage permission grants for accessing those specific users' data.

ID32ca478f-f89e-41d0-aaf8-101deb7da510
ConsentAlways needs admin consent
RiskCan change data across the whole tenant.

Grant it to an app

In the portal: App registrations › your app › API permissions › Add a permission › Microsoft Graph › Application permissions, then grant admin consent. Or with Graph PowerShell:

powershell5 lines
Connect-MgGraph -Scopes "Application.Read.All", "AppRoleAssignment.ReadWrite.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
$app   = Get-MgServicePrincipal -Filter "appId eq '<your app's client id>'"
New-MgServicePrincipalAppRoleAssignment -ServicePrincipalId $app.Id `
    -PrincipalId $app.Id -ResourceId $graph.Id -AppRoleId "32ca478f-f89e-41d0-aaf8-101deb7da510"

Which apps already have it?

powershell6 lines
# Apps that hold TeamsAppInstallation.ReadWriteAndConsentForUser.All as an application permission
Connect-MgGraph -Scopes "Application.Read.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
Get-MgServicePrincipalAppRoleAssignedTo -ServicePrincipalId $graph.Id -All |
    Where-Object AppRoleId -eq "32ca478f-f89e-41d0-aaf8-101deb7da510" |
    Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime

Other TeamsAppInstallation permissions

Check every app in your tenant → Permission explainer

Sources