How to Place Microsoft Teams Data on Legal Hold
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In this article
- Introduction to Teams legal hold
- Licensing requirement
- Content locations to place on hold to preserve Teams content
- How to place a user or Team on legal hold
- Limitations of using legal holds as a backup solution
How to Place Microsoft Teams Data on Legal Hold
10 Apr 2025
3 min read
Anju George
Teams legal hold at a glance
- Placing Microsoft Teams data on legal hold requires understanding where Teams content is stored and using Microsoft Purview’s eDiscovery tools to preserve it.
eDiscovery (Standard) allows you to create and manage holds on content across Microsoft 365. For more advanced capabilities like custodian management, legal hold notifications, and analytics, eDiscovery (Premium) is required.
- Many organizations believe that they can leverage Microsoft's legal holds to back up critical data. This is a dangerous misconception that can place a company’s data at risk.
Read more
- Exchange Online mailboxes
- OneDrive for Business accounts
- SharePoint sites (including those associated with Microsoft Teams)
- Microsoft 365 Groups and Teams
1. Introduction to Teams legal hold
Legal holds can be applied at both the user and team level:
Placing a user on hold preserves their 1:1 chats, group chats, private channel messages, and files stored in OneDrive.
Placing a team (via the associated Microsoft 365 Group) on hold preserves standard/shared channel messages and files stored in the team’s SharePoint site.
Note: Since early 2020, Microsoft has supported placing legal holds on private channel messages in Microsoft Teams. These messages are not stored in the team’s group mailbox but instead reside in the individual mailboxes of the users who participate in the private channel. In contrast, standard and shared channel conversations are stored in the Microsoft 365 Group mailbox associated with the team.
If a user's mailbox is already on legal hold, then any private channel messages stored in that mailbox are automatically preserved as part of the hold. No additional configuration is required to include those messages, as long as the user's mailbox is covered.
Quiz time! Did you know that majority of your Teams data reside outside the app?
2. Licensing requirements to create legal holds in Microsoft 365
eDiscovery (Standard): Included with Microsoft 365 E3/E5, Office 365 E3/E5, or equivalent enterprise licenses
eDiscovery (Premium): Available with Microsoft 365 E5 or as an add-on to E3
eDiscovery (Standard) supports basic holds and content search across Teams data. For advanced features like custodian management, review sets, and analytics, you need eDiscovery (Premium).
3. Content locations to place on hold to preserve Teams content
The content locations to be placed on hold depend on the type of Teams data you need to preserve and where this data is stored. (Learn more about Teams data storage location) For instance, to retain chat data (1:1 chat and group chats) for a specific user, the hold has to be placed on the user mailbox, whereas to retain standard channel data, the hold has to be placed on the group mailbox corresponding to the team.
| Type of data | Content location | ||
|---|---|---|---|
Teams chats for a user ( 1:1 chats, 1:N group chats, and private channel conversations) | User mailbox | ||
Teams channel chats (excluding private channels) | Group mailbox corresponding to the team | ||
Files shared in standard/shared channels | SharePoint site corresponding to the team | ||
Show more | |||
4. How to place a user or team on legal hold
Note: You need to be a Compliance admin or Global admin to perform the below steps.
Step 1: Navigate to the Microsoft Purview portal and sign in with your credentials.
Step 2: Select the eDiscovery solution card and then select Cases (preview) in the left nav. Choose an existing case or create a new one by selecting Create case, providing a unique name and description, and then selecting Save.
Step 3: Select a case, then select the Hold policies tab. On the Hold policies dashboard, select Create policy. Enter a name and description. Select Create to create the new hold policy
Step 4: Select Add data sources on the Hold policy tab. In the Manage data sources pane, specify the users, groups, or organizational locations to include in the hold.
Note: When a user or a group is placed on hold, all message copies will be retained. For instance, if a user posts a message in a Teams channel and then modifies the message, both copies of the message will be retained. Without the legal hold in place, only the latest message will be retained.
Step 5: Configure Hold settings:
Infinite hold: Preserves all content in the specified locations.
Query-based hold: Preserves only content matching specific criteria.
Optionally, set a date range to retain content sent, received, or created within a specific timeframe.
Step 6: Review your hold settings and click the Apply hold button to create the hold.
After the legal hold has been created, you can search for the content retained by the hold using an eDiscovery search. Click here to know how.
5. Limitations of using legal holds as a backup solution
- If the Microsoft 365 account falls victim to a ransomware attack and becomes encrypted, so will all the data on legal hold.
- eDiscovery feature is available for organizations with Microsoft 365 Enterprise E3 or E5 plans, which are more expensive than Microsoft (Office) 365 Business plans.
- Data cannot be restored from one user account to another. If you have a user leaving the company, you need to manually export the user’s data and import it to another account, which will take a significant amount of manual effort and time.
With SysCloud's cross-user restore feature, you can easily restore data to a different user account, thereby saving manual effort and time. This is especially useful when you have a user leaving the company.
Conclusion
The native legal hold capability provided by Microsoft greatly eases the eDiscovery process for litigation purposes. Nevertheless, they are not designed for backup and restore, and therefore, have serious limitations as a backup solution. Third-party cloud backup applications like SysCloud are better options to back up your Microsoft 365 data.
SysCloud Backup for Microsoft 365 provides automated, secure cloud backup for all your Microsoft 365 apps, including Teams.
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In this article
- Introduction to Teams legal hold
- Licensing requirement
- Content locations to place on hold to preserve Teams content
- How to place a user or Team on legal hold
- Limitations of using legal holds as a backup solution
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