Microsoft Security Essentials
Microsoft's free antivirus for Windows 7 and earlier, discontinued in 2020.
- Supplier
- Microsoft
- What it is
- legacy free antivirus
- Area
- Network and devices
- Who runs it
- Run by the practice or its IT provider
- What we can watch
- We follow CVE records naming it
- Status
- Recorded as discontinued in our research build
Where the supplier publishes
Last 90 days
No incidents, planned work or data problems in the last 90 days in what we hold.
Profile from our research build of public sources made on 24 Oct 2026. Product names are trade marks of their owners. Stack Check is not affiliated with or endorsed by them.