Windows Update: certificate expiration in 2027 — what to install in time
Published: 2026-10-09 · Author: AI Release · @ai_release1
⚡ The gist in 5 seconds - Windows Update certificates expire on May 17 and June 19, 2027. - Before these dates, you need to install updates to avoid losing access to the service. - A detailed breakdown of the affected versions is in the linked article. ### 🔍 What was found Microsoft announced that the certificates Windows Update uses to verify server authenticity will expire on May 17 and June 19, 2027. This will affect some devices: without installing the new updates, they will lose the ability to receive Windows Update after those dates. The linked article lists the specific updates for the affected Windows versions. The key thing is to install them before the certificates expire so that update delivery isn't interrupted. ### 💡 Why it matters Certificate expiration is a routine rotation procedure, but it's critical for users who don't keep up with updates. If you miss the deadlines, your device may stop receiving security updates, which creates risks. So it's important to check for updates in advance and install them before May 17 and June 19, 2027.