This article describes some of the limits, specifications, and other requirements that apply to Teams.
| Feature | Maximum limit | |
|---|---|---|
| Number of teams a user can create | Subject to a 250 object limit¹ | |
| Number of teams a user can be a member of | 1,000² | |
| Number of members in a team | 10,000 | |
| Number of owners per team | 100 | |
| Number of org-wide teams allowed in a tenant | 5 | |
| Number of members in an org-wide team | 5,000 | |
| Number of teams a global admin can create | 500,000 | |
| Number of teams a Microsoft 365 or Office 365 organization can have | 500,000² | |
| Number of channels per team | 200 (includes deleted channels)³ | |
| Number of Private channels per team | 30 | (includes deleted channels)³ |
| Number of members in a Private channel | 250 | |
| Maximum number of members in an Office 365 group that can be converted to a team | 10,000 | |
| Channel conversation post size | Approximately 28 KB per post4 |
1 Any directory object in Azure Active Directory counts towards this limit. Global admins are exempt from this limit, as are apps calling Microsoft Graph using application permissions.
2 This limit includes archived teams. To go beyond the maximum limit, you must contact Microsoft support.
3 Deleted channels can be restored within 30 days. During these 30 days, a deleted channel continues to be counted towards the 200 channel or 30 private channel per team limit. After 30 days, a deleted channel and its content are permanently deleted and the channel no longer counts towards the per team limit.
4 28 KB is an approximate limit because it includes the message itself (text, image links, etc.), @-mentions, number of connectors, and reactions.
Messaging
Chat
Users who participate in conversations that are part of the chat list in Teams must have an Exchange Online (cloud-based) mailbox for an admin to search chat conversations. That’s because conversations that are part of the chat list are stored in the cloud-based mailboxes of the chat participants. If a chat participant doesn’t have an Exchange Online mailbox, the admin won’t be able to search or place a hold on chat conversations. For example, in an Exchange hybrid deployment, users with on-premises mailboxes might be able to participate in conversations that are part of the chat list in Teams. However, in this case, content from these conversations isn’t searchable and can’t be placed on hold because the users don’t have cloud-based mailboxes. (For more, see How Exchange and Microsoft Teams interact.)
Teams chat works on a Microsoft Exchange backend, so Exchange messaging limits apply to the chat function within Teams.
| Feature | Maximum limit |
|---|---|
| Number of people in a private chat1 | 250 |
| Number of people in a video or audio call from chat | 20 |
| Number of file attachments2 | 10 |
| Chat size | Approximately 28 KB per post3 |
1 If you have more than 20 people in a chat, the following chat features are turned off: Outlook automatic replies and Teams status messages; typing indicator; video and audio calling; sharing; read receipts. The “Set Delivery Options” button (!) is also removed when private group chats contain more than 20 members.
2 If the number of attachments exceeds this limit, you’ll see an error message.
3 28 KB is an approximate limit because it includes the message itself (text, image links, etc.), @-mentions, and reactions.
Emailing a channel
If users want to send an email to a channel in Teams, they use the channel email address. When an email is part of a channel, anyone can reply to it to start a conversation. Here are some of the applicable limits for sending email to a channel.
| Feature | Maximum limit |
|---|---|
| Message size1 | 24 KB |
| Number of file attachments2 | 20 |
| Size of each file attachment | Less than 10 MB |
| Number of inline images2 | 50 |
1 If the message exceeds this limit, a preview message is generated and the user is asked to download and view the original email from the link provided.
2 If the number of attachments or images exceeds this limit, you’ll see an error message.
Channel names
Channel names can’t contain the following characters or words.
| Characters | ~ # % & * { } + / : < > ? | ‘ ” , . |
| Characters in these ranges | 0 to 1F 80 to 9F |
| Words | forms, CON, CONIN$, CONOUT$, PRN, AUX, NUL, COM1 to COM9, LPT1 to LPT9, desktop.ini, _vti_ |
Channel names also can’t start with an underscore (_) or period (.), or end with a period (.).
Meetings and calls
Microsoft 365 live event limit increases
To help support our customers, through January 1, 2021, we will extend temporary limit increases for live events hosted in Teams, Stream, and Yammer, including:
- Up to 20,000 attendees per event
- Up to 50 simultaneous events per Teams tenant
- Up to 16 hours per broadcast
Additionally, live events with up to 100,000 attendees can be planned through the Microsoft 365 assistance program. The team will assess each request and work with you to determine options that may be available. Learn more. After January 1, 2021, customers who need these limit increases will be required to purchase the Advanced Communications add-on.
| Feature | Maximum limit |
|---|---|
| Number of people in a meeting (can chat and call in) | 300 |
| Number of people in a video or audio call from chat | 20 |
| Max PowerPoint File Size | 2GB |
| Teams keeps meeting recordings that don’t get uploaded to Microsoft Stream, available for local download | 20 days |
Teams live events
| Feature | Maximum limit |
|---|---|
| Audience size | 20,000 attendees |
| Duration of event | 16 hours |
| Concurrent live events running in a Microsoft 365 or Office 365 organization 1 | 30 |
1 You can schedule as many live events as you want, but you can only run 30 at a time. As soon as the producer joins a live event, it’s considered to be running. The producer who attempts to join the 31th live event gets an error.
Disclaimer: This is presently increased limit. Changes to the above figures are anytime possible. AZ Cloud Technologies Pvt. Ltd. can't be questioned or becomes responsible based on the above figures.
