As you may know, Teams meetings are saved in user’s OneDrive (ad-hoc meeting) or the associated SharePoint site for a channel meeting.
Starting January 2022, these recordings will auto expire after a defined number of days (default is set to 60 days).
This means the recording will be deleted after the expiration.
If you have applied retention/compliance policies in these locations (OneDrive / SharePoint), the policy will take precedence.
When a recording is being deleted because of the expiration, the end-user will be notified by email and can recover the file for 90 days.
Meetings recorded before January 2022 are not impacted.
Users with edit/delete permissions will be able to change the default expiration time defined by the Teams administrators by using the file details pane.
Teams administrators can configure their own default expiration time by connecting to the Teams administration portal (https://admin.teams.microsoft.com/) and access the Meetings\Meeting policies blade.
Then they can edit the policy/policies they need to update the default expiration time under the Recording & transcription section of the policy.
If the Teams administrators want to set the recording to never expire, just turn of the Meetings automatically expire setting.
You can also use the Teams PowerShell command
Set-CsTeamsMeetingPolicy –Identity <policy name> -NewMeetingRecordingExpirationDays 30
If you use PowerShell and want to turn off the automatic expiration, you need to use the value –1 for the NewMeetingRecordingExpirationDays paramater.