Number of teams a user can create

250

Number of members in a team

25,000

Number of channels per team

200

Number of Private channels per Team

30

File upload limit

250 GB/file

Number of people in a meeting

1000

Number of people in a private chat

250

Microsoft Edge (Chromium-based), the latest version plus two previous versions

Fully supported

Chrome, the latest version plus two previous versions

Sharing is supported without any plug-ins or extensions on Chrome version 72 or later.

Internet Explorer 11

Calling and Meetings aren't supported. Users who try to join a meeting on Internet Explorer 11 will be directed to download the Teams desktop client.

Microsoft Edge, RS2 or later

Fully supported, except no outgoing sharing

Firefox, the latest version plus two previous versions

Audio calling, video, sharing, and meetings aren't supported. Sharing: Incoming sharing only (no outgoing). Users who try to join a meeting on Firefox will be directed to download the Teams desktop client. 

Safari 14.1+

1:1 calls not supported. Group calls supported with full audio support. Meetings, video and sharing fully supported.

Mobile OS browsers

For mobile devices, Microsoft recommends that you use the Teams app, available for free from the Android and Apple app stores.