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Defender Antivirus - how to solve these errors?

Brass Contributor
Hello community,

The message „service not running“ and „signature updates out of date“ - can anyone explain this to me and how we can solve this?

We force signature updates within the policy so I am not sure why this is happening.


1 Reply

@John Matrix


If Microsoft Defender Antivirus did not download protection updates for a specified period, you can set it up to automatically check and download the latest update at the next log on. Refer the article -