Microsoft keeps setting dates: SMTP AUTH, SMS sign-in codes, Exchange Web Services, Windows Server 2016, Entra Connect. Each one quietly breaks a scanner, an app or someone's sign-in. Attestry finds those things before the date does. Read-only checks run on your own computer and produce a plain-English report: every affected user, device and app, why it matters, and the fix. For MSPs, businesses with in-house IT and government agencies. Nothing is uploaded; we answer by email and never cold-call. Free Microsoft deadline tracker and sample reports: attestryhq.com