The majority of the updates that come through Windows Update are for Windows Defender, and for good reason. Windows Defender helps make your antimalware and other security protections stronger.
A bad security intelligence update causes Microsoft Defender to crash during Full and Quick Scans on some PCs. Upgrading to Security Intelligence Update v1.457.236.0 resolves the issue.
Recently, Microsoft delivered its latest Defender patches for Windows 11 ISOs. These definitions are released from time to time alongside the general security updates available during Patch Tuesday.
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