Retain Teams Chats and Channel Files for One Year: What First?

Why the Answer Is Correct

The real blocker in this scenario is licensing, not policy configuration: every user holds only a Microsoft 365 F1 (kiosk/frontline) license, and Microsoft's Teams retention guidance states that users who are subject to a retention policy for Teams must have an appropriate license, such as Office 365 E3 or Office 365 A3. Microsoft 365 E3 carries the Exchange Online and SharePoint Online service-plan rights that back retention for Teams chat and channel messages (held in user/group mailboxes) and for files in Teams channels (held in SharePoint), which is precisely what "retain chats and files in Teams channels for at least one year after they are deleted" demands. Because the question asks what to do first, the license upgrade must precede creating the retention policy in the Microsoft Purview compliance portal, since a policy cannot cover users whose licenses do not provide those rights. In practice the sequence is: assign Microsoft 365 E3, then create retention policies for Teams chats, channels and the associated SharePoint sites.

Why the Other Options Are Wrong

Option B (Microsoft 365 F3) is the frontline-tier distractor: although F3 is a step above F1, it does not supply the Exchange Online Plan 2 / SharePoint Online Plan 2 class governance service plans that the one-year Teams chat and channel-file retention requirement depends on, and Microsoft names E3/A3 as the appropriate examples for Teams retention. Option C (Customer Lockbox) is unrelated to retention altogether; it is an approval workflow that governs when Microsoft support engineers can access tenant data, and it neither stores nor preserves deleted Teams content. Option D (Start recording user and admin activity) turns on the unified audit log, which powers audit log search, activity reports and parts of eDiscovery, but retention policies in Microsoft Purview function independently of auditing. Enabling auditing would leave F1 users exactly as uncovered as before, so it cannot be the first required action.

Community Comment Notes

Support for the E3 answer comes from skycrap, who pointed at the Microsoft Teams retention-policies article and its requirement that users under a Teams retention policy hold an appropriate license such as Office 365 E3 or Office 365 A3. kaycee_a and razit pushed back in favor of option D, reading the Microsoft 365 security and compliance licensing guidance as saying that "the following licenses also provide user rights" for Teams chats, channels and private channels, with razit concluding that "A and b should not be needed so D". That licensing footnote covers tenant-level rights for the retention feature itself but does not change the exam's framing: with only F1 assigned and a one-year, post-deletion retention goal, the exam expects the license upgrade to E3 to come first. The community vote split (57 for A versus 43 for D) shows how attractive the audit-log option is, which is exactly why the licensing prerequisite deserves emphasis.

Hmm, also note that a commenter flagged this as a newly noticed question, so no established consensus exists yet.