How to restore and find microsoft teams chat messages as a admin?

1.Go to the Microsoft Purview compliance portal and sign in using the credentials of an account that's been assigned the appropriate permissions.

2.In the left navigation pane of the compliance portal, select Content search.

3.On the Content search page, select New search.

4.On the Name and description page, enter a name for the search, an optional description that helps identify the search. The name of the search must be unique in your organization.

5.On the Locations page, choose the content locations that you want to search. You can search mailboxes, sites, and public folders.

a.Exchange mailboxes: Set the toggle to On. The option to search all Exchange mailboxes is automatically selected. If needed, select Choose users, groups, or teams to specify the mailboxes to search. Use the search box to find user mailboxes and distribution groups. You can also search the mailbox associated with a Microsoft Team (for channel messages), Microsoft 365 Group, and Viva Engage Group. All Microsoft Copilot for Microsoft 365 activity data (user prompts and Copilot responses) generated in supported Microsoft 365 apps and services is stored in custodian mailboxes. For more information about the application data stored in mailboxes, see Content stored in mailboxes for eDiscovery.

b.SharePoint sites: Set the toggle to On. The option to search all SharePoint sites is automatically selected. Select Choose sites to specify SharePoint sites and OneDrive sites to search. Enter the URL for each site that you want to search. You can also add the URL for the SharePoint site for a Microsoft Team, Microsoft 365 Group, or Viva Engage Group.

c.Exchange public folders: Set the toggle to On. The option to search all Exchange public folders is automatically selected to search all public folders in your Exchange Online organization. You can't choose specific public folders to search. Leave the toggle switch off if you don't want search all public folders.

d.Keep this checkbox selected to search for Teams content for on-premises users. For example, if you search all Exchange mailboxes in the organization and this checkbox is selected, the cloud-based storage used to store Teams chat data for on-premises users will be included in the scope of the search. For more information, see Search for Teams chat data for on-premises users.

6.On the Conditions page, enter a keyword query and add conditions to the search query if necessary.

a.Specify keywords, message properties such as sent and received dates, or document properties such as file names or the date that a document was last changed. You can use more complex queries that use a Boolean operator, such as AND, OR, NOT, and NEAR. If you leave the keyword box empty, all content located in the specified content locations is included in the search results. For more information, see Keyword queries and search conditions for eDiscovery.

b.Alternatively, you can select the Show keyword list checkbox and the enter a keyword in each row. If you do this, the keywords on each row are connected by a logical operator (c:s) that is similar in functionality to the OR operator in the search query that's created.

Why use the keyword list? You can get statistics that show how many items match each keyword. This can help you quickly identify which keywords are the most (and least) effective. You can also use a keyword phrase (surrounded by parentheses) in a row. For more information about the keyword list and search statistics, see Get keyword statistics for searches.

c.You can add search conditions to narrow a search and return a more refined set of results. Each condition adds a clause to the search query that is created and run when you start the search. A condition is logically connected to the keyword query (specified in the keyword box) by a logical operator (c:c) that is similar in functionality to the AND operator. That means that items have to satisfy both the keyword query and one or more conditions to be included in the results. This is how conditions help to narrow your results. For a list and description of conditions that you can use in a search query, see Search conditions.

7.Review the search settings (and edit if necessary), and then select Submit to start the search.