I am under the impression that the best antivirus programs that work without account is Eset and Kaspersky.
Is there is a better solutions?
Windows defender?
Seriously you don’t need anything else, it’s really lightweight and Microsoft uses it to enhance their paid for corporate offerings. Anything more is just expensive bloatware for 99.9% of users.
Edit: Kaspersky has been banned in several countries because it may be a Russian Trojan program.