Skip to main content
    Check Your Windows Computer Now: Important Security Certificate Expires in June
    Cybersecurity
    Breaking
    2 min read

    Check Your Windows Computer Now: Important Security Certificate Expires in June

    Over a billion Windows computers need a security check before June. A critical certificate is expiring and your PC might not be ready.

    Source

    ZDNet Security

    Original headline: How to check your Windows PC for expiring security certificates - a big one ends in June

    Plain-English summary by GetCyberRight. Read the full report at the source above.

    Published Monday, May 18, 2026Updated Monday, May 18, 20262 min read
    Share:

    Windows computers use digital certificates to verify that software and updates are safe and legitimate. One of these critical certificates is expiring in June

    1. If your computer is not ready for this change, it could have trouble installing important security updates or verifying safe software. This affects more than a billion Windows PCs worldwide. Some Linux computers are also impacted by this change. This issue affects anyone using a Windows PC, especially older systems that have not been updated recently. If your computer is not prepared for this certificate expiration, you might see error messages when trying to install updates. Your computer could also have difficulty confirming that downloaded programs are safe. The good news is that most regularly updated computers will handle this automatically. Here is what you should do right now.
    2. Make sure Windows Update is turned on and your computer is getting regular updates. Go to Settings, then Update & Security, then Windows Update.
    3. Install any pending updates immediately. Click "Check for updates" and install everything available.
    4. If you have an older PC that you rarely update, consider doing a manual check this month to make sure it gets the necessary certificate update before June.
    5. Restart your computer after updates finish installing. To stay protected long term, set your computer to install updates automatically. Check for updates at least once a month, even if automatic updates are enabled. Keeping your system current is the single best way to protect against security problems. Regular updates ensure your computer can properly verify safe software and reject dangerous programs.

    Protect Yourself

    Stay one step ahead with our free family cybersecurity tools. Check links, scan for breached accounts, and get personalized risk assessments.

    Found this useful?

    Share it with someone who could use a heads-up.

    Share:

    Curated from trusted cybersecurity sources by GetCyberRight

    Source: ZDNet Security

    Discussion

    0

    Sign in to join the discussion.

    Stay ahead of cyber threats

    Get our free weekly digest. Real threats, plain language, what to do about them. No spam, ever.