Windows shows the message that your device is missing important security fixes when it has not installed recent security updates. This usually happens because updates are paused, an update keeps failing, the PC is low on space, the internet connection is metered, or the device is running an old Windows version or edition that no longer gets full support. The fix is to check for and install pending updates.
Why this happens
Windows Update delivers security patches regularly, and this warning appears when your PC has fallen behind. Common reasons include:
- Updates were paused, either by you or automatically, and never resumed.
- An update repeatedly fails to download or install because of a corrupt update cache or a service problem.
- The drive is too full to install the update.
- The connection is set as metered, so Windows holds back larger updates.
- The PC is on an old feature version or an edition that has reached end of support and no longer receives security fixes.
- Date, time, or region settings are wrong, which can block update checks.
Is this normal?
The message itself is a normal safety reminder, but the state it describes is not ideal. Being a little behind after a pause is common and easy to fix. Being far behind, or on an unsupported version, needs prompt action.
Does it cause any problems?
Yes. Missing security fixes leaves known vulnerabilities open, which raises the risk of malware and attacks. It can also cause compatibility issues with newer software and, on very old versions, mean no more protection at all.
How to fix or check it
- Open Settings, Windows Update, and click Check for updates, then install everything offered and restart.
- If updates are paused, choose Resume updates.
- Free up space if the drive is nearly full, since updates need room to install.
- If your connection is set as metered, turn that off in Settings, Network and internet, so larger updates can download.
- Run the Windows Update troubleshooter from Settings, System, Troubleshoot, Other troubleshooters.
- If an update keeps failing, reset the update components: stop the update services, clear the SoftwareDistribution folder, then check again.
- Confirm your Windows version is still supported; if it has reached end of support, upgrade to a supported feature update or version.
- Check that your date, time, and region are correct, since wrong settings can block secure connections to update servers.
Frequently asked questions
Is this message a scam?
The genuine notice comes from Windows Update inside Settings and Windows Security. If a pop-up in a browser or a random program claims your PC is at risk and asks you to call a number or download software, treat it as a scam.
What if updates keep failing to install?
Run the Windows Update troubleshooter, free up disk space, and if it still fails, reset the update cache by clearing the SoftwareDistribution folder. Persistent failures may need a repair install.
Do I have to install every update right away?
Security updates should be installed promptly because they close known holes. Feature updates are less urgent, but staying reasonably current keeps you supported and protected.