Install the Microsoft Teams Calls app to Slack to start and join Microsoft Teams calls right from your workspace.
What to expect
Office 365 work or school accounts accounts (SharePoint Online, OneDrive for Business, Office 365 Enterprise) and non-Enterprise Microsoft accounts (OneDrive and OneDrive Basic) can use the Microsoft Teams Calls for Slack app.
On-premises SharePoint installations or Office 365 plans hosted on a Microsoft national cloud deployment (Office 365 U.S. Government, Office 365 Germany, and Office 365 operated by 21Vianet in China) are not currently supported.
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.
Click Allow to grant Microsoft Teams access to Slack.
Sign in to your Microsoft account.
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:
From your desktop, hover over More, then click Automations.
Search for and select Microsoft Teams Calls.
From the app's Home tab, click Connect.
Sign in to your Microsoft account.
When prompted, click Open Slack to go back to your workspace.
Use Microsoft Teams Calls in Slack
Start a meeting
From any conversation, click the slash icon in the message field.
Type /teams-calls into the search field at the top of the menu.
Click Send to message input to add the slash command to the message field.
Send the message. All members of the conversation will see a prompt to join the meeting.
Click Join.
From Microsoft Teams in your browser or the Microsoft Teams desktop app, click Join now to start the meeting.
Tip: Add meeting [subject] after /teams-calls in the message field 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
From a meeting request in Slack, click Join.
From your browser, click Open Microsoft Teams.
Click Join Now.
Disconnect your Microsoft and Slack accounts
Click the slash icon in the message field.
Type /teams-calls logout into the search field at the top of the menu.