How to Connect to Microsoft Teams with PowerShell?

Requirement: Manage Microsoft Teams using PowerShell.

Step 1: Install Microsoft Teams PowerShell Module
To start with, you need to install the PowerShell module for Microsoft Teams. Check if you have teams module installed already by: 

Get-module *teams* 

If its not installed already, Here is how to install the Microsoft Teams PowerShell module.

• Open Windows PowerShell with "Run as Administrator", and Enter
  

  Install-Module -Name MicrosoftTeams

• Confirm the prompt by entering "A" Yes to All. The module will start to download and install.
  

Update Teams Module: To update teams module, run:

Update-Module MicrosoftTeams

Step 2: Connect to Microsoft Teams using PowerShell
Once you have the Teams PowerShell module is installed, you can connect to Teams using 

Connect-MicrosoftTeams

You'll get a popup to enter your credentials.

You can also use -Credentials parameter to get the credentials and connect.

#Connect to Microsoft Teams
Connect-MicrosoftTeams -Credential (Get-Credential)

Make sure you have either a global administrator or Teams service administrator rights prior to connecting to teams. Although any team owner/member can connect to Teams with PowerShell, their permissions are limited with in the teams.

Step 3: Start using Cmdlets for Microsoft Teams
Once you established the connectivity with Microsoft teams, you can start using PowerShell cmdlets available. E.g. Let's get a list of Microsoft teams using PowerShell

#Connect to Microsoft Teams
Connect-MicrosoftTeams -Credential (Get-Credential)

#Get all Teams
Get-Team

Get All PowerShell Cmdlets available in Teams Module
To get all available cmdlets for Teams, you can use:

Get-Command -Module MicrosoftTeams

Name	Description
Add-TeamUser	The `Add-TeamUser` adds an owner or member to the team, and to the unified group which backs the team.
Connect-MicrosoftTeams	The Connect-MicrosoftTeams cmdlet connects an authenticated account to use for Microsoft Teams cmdlet requests. You can use this authenticated account only with Microsoft Teams cmdlets.
Disconnect-MicrosoftTeams	Disconnects from the Microsoft Teams environment
Get-CsPolicyPackage	This cmdlet supports retrieving all the policy packages available on a tenant.
Get-CsUserPolicyPackage	This cmdlet supports retrieving the policy package that's assigned to a user.
Get-CsUserPolicyPackageRecommendation	This cmdlet supports retrieving recommendations for which policy packages are best suited for a given user.
Get-Team	This cmdlet supports retrieving teams with particular properties/information, including all teams that a specific user belongs to, all teams that have been archived, all teams with a specific display name, or all teams in the organization.
Get-TeamChannel	Get all the channels for a team.
Get-TeamsApp	Returns app information from the Teams tenant app store.
Get-TeamUser	Returns users of a team.
Grant-CsUserPolicyPackage	This cmdlet supports applying a policy package to users in a tenant. Note that there is a limit of 20 users you can apply the package to at a time.
New-CsBatchPolicyPackageAssignmentOperation	This cmdlet submits an operation that applies a policy package to a batch of users in a tenant. A batch may contain up to 5000 users.
New-Team	This cmdlet lets you provision a new Team for use in Microsoft Teams and will create an O365 Unified Group to back the team.
New-TeamChannel	Add a new channel to a team.
New-TeamsApp	Creates a new app in the Teams tenant app store.
Remove-Team	This cmdlet deletes a specified Team from Microsoft Teams.
Remove-TeamChannel	Delete a channel. This will not delete content in associated tabs.
Remove-TeamsApp	Removes an app in the Teams tenant app store.
Remove-TeamUser	Remove an owner or member from a team, and from the unified group which backs the team.
Set-Team	This cmdlet allows you to update properties of a team, including its displayname, description, and team-specific settings.
Set-TeamArchivedState	This cmdlet is used to freeze all of the team activity, but Teams Administrators and team owners will still be able to add or remove members and update roles
Set-TeamChannel	Update Team channels settings.
Set-TeamsApp	Updates an app in the Teams tenant app store.