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Microsoft 365 and Office | Microsoft 365 Defender | Other | Other
An integrated threat protection solution designed to detect, investigate, and respond to cyber threats across Microsoft 365 services.
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Hello Bertha Fernandez,
Welcome to Microsoft Q&A Forum.
To get Microsoft Defender installed and running, here are some steps that you can kindly follow:
1. Check your Windows edition and account permissions:
- Make sure you are running a supported version of Windows that includes Defender.
- Signed in with an administrator account to install and enable it.
2. Install/enable Defender:
- Go to Settings > Update & Security > Windows Security (or Settings > Privacy & security > Windows Security for Windows 11)
- If Defender is not installed/enabled, try turning it on via App & browser control > Windows security
3. Update and run quick scan:
- Go to Windows Security app > Virus & threat protection > click Check for updates to make sure your virus definitions are current.
- Click Quick Scan to ensure everything is clean.
You can check out this link for more information: https://support.microsoft.com/en-us/topic/installing-microsoft-defender-ba7d17d7-464b-444d-bb47-990b7278369d
I hope it helps, please feel free to let me know if you need any further assistance.
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