Microsoft Teams Calls for Slack

Install the Microsoft Teams Calls app to your workspace to launch Microsoft Teams calls from Slack.

Tip: Workspace Owners and Admins can choose to set Microsoft Teams Calls as a default calling app in Slack. 


Install the Microsoft Teams Calls app to Slack

Any member with permission to add apps can install the Microsoft Teams Calls app to your workspace. Once the app is installed, anyone in your workspace can connect their Office 365 account with Slack to use it. 

  1. Visit the Microsoft Teams Calls page in the Slack App Directory. 
  2. Click Add to Slack
  3. Click Allow to grant Microsoft Teams access to Slack. 
  4. Sign in to your Microsoft account. 
  5. When prompted, click Open Slack to go back to your workspace. 

Note: If you’re on the Enterprise Grid plan, you’ll need to install the Microsoft Teams Calls app to each workspace in your org where you’d like to use it.


Connect your Microsoft and Slack accounts

If the Microsoft Teams Calls app has already been installed to your workspace, you can connect your account by following the steps below:

  1. From your desktop, click  Apps at the top of the left sidebar. If you don't see this option, click  More to find it.
  2. Search for and select Microsoft Teams Calls
  3. From the app's Home tab, click Connect
  4. Sign in to your Microsoft account. 
  5. When prompted, click Open Slack to go back to your workspace.


Use Microsoft Teams Calls in Slack

Start a meeting

  1. Type the /teams-calls slash command into the message field of a channel or direct message (DM) and send the message. All members of the conversation will see a prompt to join the meeting. 
  2. Click Join
  3. From Microsoft Teams in your browser or the Microsoft Teams desktop app, click Join now to start the meeting. 

Tip: Type /teams-calls meeting [subject] to start a meeting with a title. For example, you might use /teams-calls meeting [Weekly Sales review] for your team meeting.  

Join a meeting from a channel or DM

  1. From a meeting request in Slack, click Join
  2. From your browser, click Open Microsoft Teams
  3. Click Join Now

Tip: If you use Outlook Calendar in Slack, you can also join Teams meetings from any event.


Disconnect your Microsoft and Slack accounts

  1. Type the /teams-calls logout slash command into the message field of a channel or DM and send the message. 
  2. Click Yes, sign out

Note: To uninstall the Microsoft Teams app, follow the steps in Remove apps and custom integrations from your workspace. No one will be able to use the app if you uninstall it.