Windows Update Certificates Expire in 2027: Older Windows Versions Will Be Left Without Updates

⚡ The gist in 5 seconds - Microsoft has announced that Windows Update certificates will expire in May and June 2027. - Older versions of Windows will lose the ability to receive updates after that date. - Users are advised to upgrade to a supported version in advance. ### 🔍 What was found Microsoft has officially warned that Windows Update certificates will expire in May and June 2027. This will affect older versions of Windows: after the specified date, they will stop receiving updates. The exact list of affected versions and recommended actions are detailed in the Biblsoft article. The problem stems from the digital certificates used to verify the authenticity of updates. Once a certificate expires, the Windows Update client can no longer confirm the safety of downloaded packages — and the system refuses to install them. Owners of older Windows versions should upgrade to a newer, supported version before the deadline. ### 💡 Why it matters This is especially relevant for Windows 10 users: support for the system ended back on October 14, 2025, and free security updates are no longer available. Now, in 2027, older versions will lose even the basic mechanism for receiving updates via Windows Update. This means staying on them will become even riskier — without the certificates, the system will effectively be cut off from updates and security patches. Microsoft's recommendation is clear: move to a current version of Windows in advance, without waiting for the certificates to expire.