Teams adds reporting tool for misbehaving external guests
Microsoft has built a new reporting option directly into Teams that lets ordinary users and administrators flag external or guest accounts for policy breaches or inappropriate conduct. The change carries roadmap ID 560547 and begins rolling out in May 2026. It targets safety gaps that appear when people collaborate with outsiders across company boundaries.
Until now, spotting a problematic guest usually meant waiting for a complaint or spending hours digging through permissions lists, so many issues stayed hidden until an audit or incident forced action. The reporting button moves detection closer to the people who notice problems first, yet it leaves untouched the underlying habit of granting guest access without review or expiry, which is what creates the compliance exposure in the first place.
Analysis
Ignore the hype around this button and treat it as a minor reporting channel that will probably generate more tickets than it prevents. Open the SharePoint admin center today, export the list of every site and Team with external sharing turned on, and revoke access for any guest who is no longer active.
Citation
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