https://learn.microsoft.com/en-us/microsoftteams/limits-specifications-teams Skip to main content This browser is no longer supported. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Download Microsoft Edge More info about Internet Explorer and Microsoft Edge Table of contents Exit focus mode Read in English Save Table of contents Read in English Save Edit Print Twitter LinkedIn Facebook Email Table of contents Limits and specifications for Microsoft Teams * Article * 08/01/2023 * 56 contributors * Applies to: Microsoft Teams Feedback In this article This article describes some of the limits, specifications, and other requirements that apply to Teams. Teams and channels 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 25,000^6 Number of owners per team 100 Number of org-wide teams allowed in a tenant 52 Number of members in an org-wide team 10,000 Number of teams a global admin can create 500,000 Number of teams a Microsoft 365 or Office 365 500,0003 organization can have 200 (includes Number of channels per team deleted channels) ^4 30 (includes Number of Private channels per team deleted channels) ^4 Number of members in a Private channel 250 Maximum size of distribution list, security group or Microsoft 365 group that can be imported in to a 3,500 team Maximum number of members in a Microsoft 365 group 10,000^6 that can be converted to a team Channel conversation post size Approximately 28 KB per post^5 ^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. ^3 To further increase the number of teams, you must contact Microsoft support and request further increase to the number of Azure Active Directory objects in your tenant. Increase is only made for real-life production scenarios. ^4 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. ^5 28 KB is an approximate limit because it includes the message itself (text, image links, etc.), @-mentions, number of connectors, and reactions. ^6 Shared channels members from outside the team count toward this limit. Further note that teams/channel mentions are blocked in teams with over 10,000 members. Limits for shared channels The following table describes the maximum number of channels and members. Maximum... Value Notes Members in Includes all users in the a team 25,000 team and direct members in shared channels. Shared Hosted and shared with the channels 200 team. (Includes deleted per team channels during their 30-day recovery window.) Teams a channel can be 50 Excluding parent team shared with 5,000 direct members, Real time updates are only Members in including up to 50 teams. available to 25,000 users a shared (Each team the channel is at a time and only 25,000 channel shared with counts as one users will appear in the member for purposes of this channel list. limit.) The following limitations also apply: * Only Azure AD work or school accounts are supported for external participants. * Shared channels support tabs except for Stream, Planner, and Forms. * Bots, connectors, and message extensions are not supported. * Org-wide teams are not supported to be added as members of a shared channel. * When you create a team from an existing team, any shared channels in the existing team won't be copied over. * Notifications from shared channels are not included in missed activity emails. * Shared channels are not supported in class teams. 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.) Feature Maximum limit Number of people in a private chat^1 250^2 Number of people in a video or audio call 20 from chat Number of file attachments^3 10 Chat size Approximately 28 KB per post^4 ^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 Only 200 members at a time can be added to a group chat. See this article for more information. ^3 If the number of attachments exceeds this limit, you'll see an error message. ^4 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 size^1^ 24 KB Number of file attachments^2 20 Size of each file attachment Less than 10 MB Number of inline images^2 50 Note There is a throttling limit on how many emails you can send to a channel. The limit is six emails per ten seconds per channel per user and eight emails per ten seconds per tenant per user. ^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. For more information, see Exchange Online limits. Note Message size, file attachments, and inline images limits are the same across all Microsoft 365 and Office 365 licenses. Emailing a channel is not available in Teams for Office GCC/GCCH/DOD organizations. Channel names Channel names can't contain the following characters or words: Type Example Characters ~ # % & * { } + / \ : < > ? | ' " , .. Characters in 0 to 1F these ranges 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 Feature Maximum limit With Microsoft 365 Business Basic, Microsoft 365 Business Standard, Microsoft 365 Business Premium, and Microsoft 365 A1 Number of people in a plans, you can host online meetings and meeting (can chat and video calls for up to 300 people using call in) Microsoft Teams. With Microsoft 365 E3/E5, Microsoft 365 A3/A5, and Microsoft 365 Government G3/G5 plans, this limit increases up to 1,000 people. Number of people in a video or audio call from 20 chat Max PowerPoint File Size 2 GB Teams keeps meeting recordings that don't get uploaded to 20 days Microsoft Stream, available for local download Meeting recording 4 hours or 1.5 GB. When this limit is maximum length reached, the recording will end and automatically restart. For more information, see Meetings, webinars, and live events. Note Breakout rooms can only be created in meetings that have fewer than 300 attendees. In addition, creating breakout rooms in a meeting automatically limits the number of meeting attendees to 300. Advise your end-users to not initiate breakout rooms in meetings where they expect more than 300 participants. For more information on large Team meetings, share the guidance Best practices for a large Teams meeting with your end-users. Meeting expiration Note A meeting URL will never stop working. The expiry only relates to any PSTN dial-in numbers, CVI coordinates, and/or underlying meeting policies and settings. Meeting expires Each time you start or update a Meeting type after this much meeting, expiration extends by this time much time Meet now Start time + 8 N/A hours Regular with Start time + 60 60 days no end time days Regular with End time + 60 days 60 days end time Recurring Start time + 60 with no end days 60 days time Recurring End time of last with end occurrence + 60 60 days time days Note Microsoft Teams meetings have a time limit of 30 hours. Live Events Live events are structured meetings that enable your organization to schedule and produce events that stream to large online audiences--up to 20,000 people. With live events, the audience interaction is a managed Q&A experience. Feature Maximum limit Audience size Up to 20,000 attendees ^1 Duration of event 4 hours Concurrent Live Events running in a Microsoft 365 or 15 Office 365 organization ^2 ^1 The usual 10,000 is increased to 20,000 through December 31, 2023. You can schedule even greater numbers with live events in Viva Engage and/or Microsoft Stream. For more information, see Live events across Microsoft 365. Note that events over 20,000 attendees require the Live Events Assistance Program. ^2 You can schedule as many Live Events as you want, but you can only run 15 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 16th live event gets an error. For more information about live events, go to Teams live events. See also Schedule a Teams live event. Important Microsoft 365 live event limit increases To continue supporting our customers' needs, we will extend temporary limit increases for live events through December 31, 2023, including: * Event support for up to 20,000 attendees * 50 events can be hosted simultaneously across a tenant * Event duration of 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. Presence in Outlook Teams presence in Outlook is supported on the Outlook 2013 desktop app and later. To learn more about presence in Teams, see User presence in Teams. Storage Each team in Microsoft Teams has a team site in SharePoint Online, and each channel in a team gets a folder within the default team site document library. Files shared within a conversation are automatically added to the document library, and permissions and file security options set in SharePoint are automatically reflected within Teams. Note Each private channel has its own SharePoint site (previously called "site collection"). If you don't have SharePoint Online enabled in your tenant, Microsoft Teams users cannot always share files in teams. Users in private chat also cannot share files because OneDrive for Business (which is tied to the SharePoint license) is required for that functionality. By storing the files in the SharePoint Online document library and OneDrive for Business, all compliance rules configured at the tenant level will be followed. (For more, see How SharePoint Online and OneDrive for Business interact with Microsoft Teams.) Because Teams runs on a SharePoint Online backend for file sharing, SharePoint limitations apply to the Files section within a Team. Here are the applicable storage limits for SharePoint Online. Microsoft Microsoft Office 365 Office 365 Office 365 Office 365 Feature 365 Business 365 Business Enterprise Enterprise Enterprise Enterprise Basic Standard E1 E3 E5 F1 1 TB per 1 TB per 1 TB per 1 TB per 1 TB per organization organization organization organization organization 1 TB per Storage plus 10 GB plus 10 GB plus 10 GB plus 10 GB plus 10 GB organization per license per license per license per license per license purchased purchased purchased purchased purchased Storage Up to 25 TB Up to 25 TB Up to 25 TB Up to 25 TB Up to 25 TB Up to 25 TB for per site or per site or per site or per site or per site or per site or Teams group group group group group group Files File upload limit 250 GB 250 GB 250 GB 250 GB 250 GB 250 GB (per file) Channels are backed by folders within the SharePoint Online site (previously called "site collection") created for the team, so file tabs within Channels share the storage limits of the team they belong to. For more information, see SharePoint Online limits. Class teams Microsoft Teams for Education provides templates designed for unique education scenarios, such as classroom teaching. More information about team types, including class teams, is available in Choose a team type to collaborate in Microsoft Teams. A class team is a template type with additional apps included, and with limits separate to the number of team members. Note Using class teams requires an Office 365 Education license. Limits for class teams are listed in the following table: Feature Maximum limit Number of members in a team See the Teams and channels section of this article Number of members to use Assignments 300 in a class team Number of members to use a OneNote 300 Class Notebook in a class team A class team can support more than 300 members. However, if you plan to use either the Assignments app or Class Notebook app within your team, you will need to keep the number of members below the maximum limits above. Tags Feature Maximum limit Number of tags per team 200 Number of suggested default tags per team 25 Number of team members assigned to a tag 200 Number of tags assigned to a user per team 25 Contacts Teams uses these contacts: * Contacts in your organization's Active Directory * Contacts added to the user's Outlook default folder Teams users can communicate with anyone in your organization's Active Directory and can add anyone in your organization's Active Directory as a contact and to their contact lists by going to Chat > Contacts or Calls > Contacts. Teams users can also add a person who isn't in your organization's Active Directory as a contact by going to Calls > Contacts. Browsers Teams fully supports the following Internet browsers, with noted exceptions for calling and meetings. This table applies to operating systems running on desktop computers. Calling - Meetings - audio, video, and sharing^ Browser audio, video, 1 ^2 and sharing Meetings are supported only if the meeting includes PSTN coordinates. To attend a meeting on IE11 without PSTN coordinates, users must download the Teams desktop client. Video: Not supported Sharing: Incoming sharing only (no outgoing) Internet Explorer 11 Not supported Microsoft 365 apps and services will not support Internet Explorer 11 starting August 17, 2021 (Microsoft Teams will not support Internet Explorer 11 earlier, starting November 30, 2020). Learn more. Please note that Internet Explorer 11 will remain a supported browser. Internet Explorer 11 is a component of the Windows operating system and follows the Lifecycle Policy for the product on which it is installed. Fully Microsoft Edge, supported, Fully supported, except no outgoing RS2 or later except no sharing outgoing sharing^3 Microsoft Edge (Chromium-based), Fully the latest supported Fully supported version plus two previous versions Google Chrome, Fully supported the latest Fully version plus two supported Sharing is supported without any previous versions plug-ins or extensions on Chrome version 72 or later. 1:1 calls Safari 15+ fully supported. 1:1 calls not supported. Group calls fully Meetings: Fully supported supported. Safari 14+ Video: Fully supported Video: Fully supported Sharing: Fully supported Sharing: Fully supported 1:1 calls not supported. Group calls supported with full Meetings are supported with full audio audio support. Safari 13.1+ support. Video: Incoming only Video: Incoming only Sharing: Fully supported Sharing: Fully supported Meetings: Fully supported Video: Fully supported Firefox, the Sharing: Fully supported latest version plus two previous Not supported Note that users are required to have versions the OpenH264 plugin in Firefox for full support. Browsers without this plugin may see disruptions in the meeting, including in screen sharing activity. Learn more at Mozilla Firefox Support. Meetings are supported only if the meeting includes PSTN coordinates. To attend a meeting on Safari without PSTN coordinates, users must download the Teams desktop client. Video: Not supported Safari versions Not supported before 13 Sharing: Incoming sharing only (no outgoing) Safari is enabled on versions higher than 11.1 in preview. While in preview, there are known issues with Safari's Intelligent Tracking Prevention. ^1 To give and take control of shared content during sharing, both parties must be using the Teams desktop client. Control isn't supported when either party is running Teams in a browser. This is due to a technical limitation that we're planning to fix. ^2 Teams meetings on browsers are limited to a single stream; either incoming video feed of the current speaker or screen sharing. ^3 Edge RS2 or later doesn't support sending real-time audio and video traffic through HTTP proxies. Note Running Teams in a browser is supported on PCs and Macs that meet the minimum Hardware requirements for Microsoft Teams. For example, running Firefox on the Linux operating system is an option for using Teams. On mobile devices we recommend that you use the Teams app. The Teams app is available from the Android and iOS stores. Operating systems For information about operating system requirements, see Get clients for Microsoft Teams. Feedback Submit and view feedback for This product This page View all page feedback --------------------------------------------------------------------- Additional resources Theme * Light * Dark * High contrast * * Previous Versions * Blog * Contribute * Privacy * Terms of Use * Trademarks * (c) Microsoft 2023 Additional resources In this article Theme * Light * Dark * High contrast * * Previous Versions * Blog * Contribute * Privacy * Terms of Use * Trademarks * (c) Microsoft 2023