// graph-permissions · TeamsAppInstallation

TeamsAppInstallation.ReadWriteAndConsentSelfForChatMicrosoft Graph permission · Medium risk

Allows a Teams app to read, install, upgrade, and uninstall itself in chats the signed-in user can access, and manage its permission grants for accessing those specific chats' data.

Delegated permission

Medium risk

Allow the Teams app to manage itself and its permission grants in chats. Allows a Teams app to read, install, upgrade, and uninstall itself in chats the signed-in user can access, and manage its permission grants for accessing those specific chats' data.

ID	`a0e0e18b-8fb2-458f-8130-da2d7cab9c75`
Consent	Needs admin consent
Risk	Can make changes. Check the scope is as narrow as possible.

Ask for it when signing in

Delegated permissions act as the signed-in user, so the app can never do more than that user can.

powershell1 line

Connect-MgGraph -Scopes "TeamsAppInstallation.ReadWriteAndConsentSelfForChat"

Which apps already have it?

powershell6 lines

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6# Apps with delegated consent for TeamsAppInstallation.ReadWriteAndConsentSelfForChat
Connect-MgGraph -Scopes "Application.Read.All", "Directory.Read.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
Get-MgOauth2PermissionGrant -All |
    Where-Object { $_.ResourceId -eq $graph.Id -and ($_.Scope -split " ") -contains "TeamsAppInstallation.ReadWriteAndConsentSelfForChat" } |
    Select-Object ClientId, ConsentType, PrincipalId

Other TeamsAppInstallation permissions

Check every app in your tenant → Permission explainer

Sources

Microsoft Learn: Microsoft Graph permissions reference