#Download teams conversation code
#Download teams conversation password

'Authorization' = 'Bearer ' + $AccessToken $TokenResponse = Invoke-RestMethod -Uri '$TenantID/oauth2/v2.0/token' -Method POST -Body $ReqTokenBodyДЇunction ListUserIDforCurrentUser($AccessToken, $Username) #Function to get the access token with delegated permissionsДЇunction GetBearerTokenForDelegatedAccess($TenantID, $ClientID, $ClientSecret, $Username, $Password)

Since the API returns only 20 messages and a link to next page, follow the next page URL and keep on calling the API till there are no more pages.

For each chat, call the API $ChatID/messages to get the messages.

Call the API $UserID/chats to get a list of all Chats.

Call the API $Username to get the User ID, which is required to call the ListChat API.

#Download teams conversation password

Get the Access Token by passing in the Tenant ID, Client ID, Client Secret, UPN and Password of the user whose Chats need to be exported.

First Stop PowerShellД®ven though, we canвЂ™t provide this solution to business users, it was just to see what to expect as an outcome. Providing consent is a one time activity. Once the URI is constructed, the user who is supposed to export his/her chat messages, should open this in browser and provide the consent to the app to connect and fetch the Chats and Messages on his/her behalf.

scope= Add add the permissions requested by the app.

#Download teams conversation code

response_mode=query, means the code will be returned in the query string.

In this case, Use the SharePoint page url added as redirect URl in the app

redirect_uri=The URL of the page where you will be redirected to after successful consent.

response_type=code, this means a authentication code will be returned after successful cosent.client_id= Provide Client ID of the Azure AD App.Otherwise, you need to get the consent from the user by constructing a consent URL like this: ' If you have tenant admin credentials, you can just click on the button вЂњGrant Admin Consent for xxxвЂќ, otherwise send the link of the app to your tenant admin to do so. You can chose to Grant Admin Consent to add these permissions. Note that all the permissions provided are of type вЂњdelegatedвЂќ. In the new window, click on Microsoft Graph and select the permissions listed in the screenshot. Click on API Permissions in the left navigation and Click Add Permission. Now, we need to assign appropriate permission to this app to be able to read Chats and Messages. Copy the generated Client Secret to a notepad. Type in a Description, select Expires as Never and Click Add. Click on Certificates and secrets in the left navigation and then click on New client secret. Once registered, go to the Overview and copy the Application (client) ID and Tenant ID to a notepad. Just create a new page in any SharePoint site and provide the URL here. This will come handy later, so I recommend to do it this way. Redirect URI is optional, but I filled in a url like of one of my existing SharePoint page. Just go to Azure AD вЂ“ App Registrations and Click on New registration.ДЇill in the Application Name and account type. To use the Graph API, we first need to register an app in Azure AD and grant it permissions to be able to read chats.

With this limitation in mind, I continued my journey to the solution. So, it wonвЂ™t have access to all the users chats but only the current logged-in user. What this essentially mean, is that the application can only read the chats вЂњon behalfвЂќ of the logged in user. To some extent it makes sense from data privacy point of view, but then вЂњList Messages in a ChatвЂќ does support application permission, so itвЂ™s kind of weird. The вЂњList ChatsвЂќ APIs only supports delegated permissions and Application permissions are not supported (yet). LimitationД®ven before I could jump into using these APIs to try n export some chats, I came across a major limitation. Well, that made it clear, that I will have to go for some customizations to be able to achieve this. Some more googling led me to Beta version of these Graph APIs вЂ“ List Chats and List Messages in a Chat. Since the requirement came from business, I was looking for more like an Click on вЂњExport ChatsвЂќ somewhere and get an export in easily readable format. But neither of these actually provides an acceptable solution to end users. So, it was time to start a fun journey of finding it out and getting it done! Initial FindingsДЄs it goes, some initial googling led to a few articles like this and this. Quick google search made it evident that there is no such feature available as of date. The expectation was to get something like the Conversation History in Outlook, we used to have in Skype days. Recently I came across a requirement about being able to export all the chat messages. Article updated on 31st Oct 2020 to use v1 API instead of Beta one to get the list of chats