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Microsoft Safety Scanner vs ESET Online Scanner: catalog facts
Microsoft Safety Scanner	ESET Online Scanner
Free Free download from Microsoft.	Free Free to use with no credit card required.
Windows	Windows
Portable on-demand scanner that needs no installation Attempts to reverse changes made by detected threats	No installation of a full antivirus suite needed Removes malware as well as detecting it
No real-time protection; scans only when you run it Windows only, and requires SHA-2 signing support	One-time scans only, no real-time protection Windows only
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License: Proprietary
No account needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.