Why Does My Windows Defender Not Update?

Check if you have other security software installed, as these will turn off Windows Defender and disable its updates. Uninstall your current anti-malware software. Check for updates in Windows Defender Update Interface and try Windows Update if it failed.

How do I force Windows Defender to update?

1. Open the Windows Defender Security Center by clicking the shield icon in the task bar or searching the start menu for Defender.
2. Click the Virus & threat protection tile (or the shield icon on the left menu bar).
3. Click Protection updates. …
4. Click Check for updates to download new protection updates (if there are any).

Does Windows Defender automatically update?

Use Group Policy to schedule protection updates

By default, Microsoft Defender Antivirus will check for an update 15 minutes before the time of any scheduled scans. Enabling these settings will override that default.