UPDATED July 2023. How to remove Office 365 Yammer and Viva Engage licenses using PowerShell Set-MsolUserLicense. Find the right Office 365 product SKU and license plan name. Get the status of disabled Yammer licenses and re-enable all disabled license plans.

How to connect to Yammer REST API using PowerShell. Register an App with Yammer, generate a developer token, connect to REST API and get a list of Yammer groups.

Yammer how-to guides: Connect to Yammer REST API using PowerShell. Get all Yammer groups using REST API and PowerShell. Get Yammer group members using REST API PowerShell. Delete Yammer groups using REST API PowerShell

Yammer guides for IT Admins - Block access to Yammer - Viva Engage. Stop "Discover what's happening across your organization" emails from Yammer

How to get all Yammer groups names and ids using REST API PowerShell and export to csv

How to fix Yammer error - Name is already in use by another community, user, or guest. Permanently delete (purge) soft-deleted Yammer Office 365 groups and SharePoint sites

This guide will show you how to create a retention policy to permanently delete old Microsoft Teams chat messages

How to block users from being able to create Teams by restricting who can create Microsoft 365 groups using PowerShell Set-AzureADDirectorySetting

How to fix error when installing Microsoft Teams "Cannot install for all users when a VDI environment is not detected"  

How to uninstall Teams personal app from Windows 11 (for All users) with a PowerShell script deployed using Microsoft Endpoint manager (Intune)

How to configureTeams admin settings to allow external guests to join Teams meetings without a Microsoft work or school account.

Teams live event recordings can be downloaded by the producer from the Teams meeting details.

How to rename a Microsoft Team using PowerShell. Change the Teams display name and description, change Teams email addresses and rename the Teams SharePoint site. 

How to disable the Microsoft Teams welcome message for Office 365 groups using PowerShell Set-UnifiedGroup 

UPDATED July 2023 - To prevent access to Yammer, complete the following steps: Remove Office 365 Yammer license, remove Viva Engage Core license and enforce Office 365 identity in Yammer

Office 365 - How to stop "Discover what's happening across your organization" emails from Yammer being sent to All Users with an Exchange Online Transport Rule 

 How to fix Office 365 mailbox not showing in Exchange Hybrid on-premises using PowerShell Enable-RemoteMailbox

How to rename an Office 365 Team using PowerShell. Change the Team display name and description, change Team email addresses and rename the Team SharePoint online site.

How to fix Non-delivery report error '420 4.2.0 Recipient deferred because there is no Mdb' by running Enable-RemoteMailbox PowerShell