Limits in Viva Engage

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Learn about the service limits in Viva Engage for Microsoft 365.

Network limits

Feature Details
Native Mode Native mode is recommended for the best support over the long term. Viva Engage networks in Microsoft 365 Native mode have different features than legacy Viva Engage networks.
Bulk Update for Network Admins Bulk updates to users are supported for non-Native Mode networks of 2000 users or less.
Home Networks Home networks can’t be deleted and recreated.

File limits

Feature Details
Maximum file size and storage Migrating to Microsoft 365 Native Mode for Viva Engage is recommended to ensure all files are stored in SharePoint Online.
For Viva Engage files stored in SharePoint:
  • The maximum size for a single file attachment is 15 gigabytes (GB).
  • There are no dimension limitations for images, but the SharePoint maximum size settings in your organization apply.
  • Any file type can be added, but preview and editing are limited to certain file types.

SharePoint limits apply to Microsoft 365 connected communities in Viva Engage.
For files stored in Viva Engage file storage:
  • The maximum size for a single file attachment is 5 gigabytes (GB) for Viva Engage Enterprise networks and 100 megabytes (MB) for Viva Engage Basic networks.
  • The maximum dimensions are 7,680 pixels wide and 4,320 pixels high, and the maximum image size is 10 megabytes (MB).

For more information on image use, including templates and dimensions for cover photos, see Viva Engage Adoption Resources.
Number of file attachments per post Each post can have a maximum of 100 files.
Supported video formats The following video types are supported for inline playback: .wmv, .avi, .mpeg, .3gp, .flv, .mov, .mp4, .mpg, .ogm, .mkv, .ogv, and .ogg.
Viva Engage uses Azure Media Services to display videos uploaded in Viva Engage.
Inline video playback Microsoft Stream, SharePoint Online, YouTube, and Vimeo are supported for inline playback.
Guest access Microsoft 365 Native Mode for Viva Engage is required for full guest support.
Legacy network-level guests may experience file access issues.
Link previews (Open Graph objects) Links to internal systems that can’t be publicly resolved, or requiring authentication won't display valid previews because metadata can’t be extracted.
Stories File Upload 3 minute video
Storyline Attachments The limit is associated with the type of file uploaded to a person's storyline, for example images 5GB and other attachments 15GB.

Viva Engage live event limits

Feature Details
Number of live event viewers Currently, the limit is 10,000 participants. For events of a higher size, work through the Live Events Assistance Program.
Live event creation permissions Permission to create live events in Stream is required.
Community admins in Viva Engage can create or schedule live events.
Guest access Members of your canonical network can create or attend live events in Viva Engage.
Closed captioning Closed captions aren't available for live events in Viva Engage. A future update will add support for closed captions.
Duration of event 4 hours
Concurrent live events running in Microsoft 365 or Office 365 organization 50 events per tenant
Limit of presenters? 100 presenters

For more limits regarding Microsoft Teams live events and meetings, see Teams Live Events.

Viva Engage community limits

Feature Details
Number of members in a community Varies based on whether community is connected to a Microsoft 365 group, is a dynamic community, or is the All Company community.
Dynamic community membership limit: 500K
Number of communities you can be a member 7,000 communities in total. However, we recommend the users to be a member of 200 or less private communities, else the performance is impacted.
Number of updates via Address book import to add multiple users at once 200 community member per batch upload.
Limit of dynamic communities No limit
Number of admins per community 100 for both native and non-native networks.
Number of network admins Varies depending on Native mode configuration. No limit of network admins.
Connected Communities and Microsoft Entra ID Sync Latency with sync may occur with a community membership over 100K.
Members in All Company Includes all users in the tenant.
Number of Official Communities No limit
Number of favorites communities 10
Community name character limit Depends on the naming convention of the network.
Maximum 255 characters including any prefix.
Community description character limit 150 characters
Community info length No character limit (up to 1 GB)
Limit of pinned resources No limit
Limit of related communities No limit for normal communities but best practices are 3-5 related communities.
Related communities aren't available for All Company.
Limit on pending members for private communities No limit.
Limits on community management in Native Mode Connected groups should be managed using tools designed to update Microsoft 365 groups, including the Microsoft 365 admin portal, Microsoft Entra admin center, and the Azure AD PowerShell module.
Post by email No limit

Viva Engage messaging limitations

Feature Details
Character limit per message 10K character limit
Deleting conversations Deleting an entire thread requires all messages to be deleted. Deleting the conversation starter promotes the first reply to become the thread starter.
Network admins can delete messages from any conversation thread if Private Content Mode is enabled.
Community admins can delete messages in the community they administer.
Original author can only delete their own posts.
Message limit per conversation thread A conversation can have up to 10,000 posts.
Link Previews (Open Graph metadata)
  • Previews of link content can only be generated for public content and some supported Microsoft 365 resources.
  • Preview generation depends on successful metadata extraction at the time of posting which can vary based on the availability of the site being linked to.
  • Links to systems inside the organizations firewall or requiring authentication aren't supported.
  • Link preview metadata may not be updated after the first usage of the link within the network.
Private content mode Verified admins can’t access private content by default. Private content mode must be enabled to access private messages and private communities.
Nested Replies and legacy threads Legacy threads allow creation of new nested replies. The older ‘in reply to’ messages would stay as top level comments, for now.

External Network limits

Feature Details
External Networks Only verified admins can create ENs.
You can only create 1 EN per canonical network.
Your tenant needs to be at least 29 days old before you can create an EN.
You can only add 1000 members per day in the EN.
Some invite flows are limited to 100 invites per user/day.
Limitation of 5 external networks that an administrator can create if those 5 external networks have a single member (usually, that one member is the network’s creator).
If there is at least one other user in an external network, it doesn’t count towards that limit.
Files Files are stored in Viva Engage storage and aren't accessible through SharePoint.
Communities Communities aren't connected to Microsoft 365 Groups.
Native Mode Native mode features and restrictions don't apply to external networks.