Microsoft Defender Antivirus Update ◆

These contain the latest "signatures" or definitions of malware and viruses. They are released several times a day.

Select to download and install the latest intelligence. Troubleshooting Update Failures microsoft defender antivirus update

For managed environments, WSUS allows administrators to approve updates selectively. This provides granular control over Platform and Engine rollouts but requires careful configuration to ensure Security Intelligence updates are approved rapidly, often bypassing the standard approval workflow via automatic approval rules. These contain the latest "signatures" or definitions of