moderated Re: antivirus software
I, too, recommend Windows Security and it's all I recommend these days to clients, whether they're screen reader users or not.
Look at the most recent testing results from the following antivirus/security testing labs, along with the historical results from the past several years if you want to see how Windows Security/Defender has been performing. Windows Security has been solidly in the top 10, often top 5, and frequently beats out several well-known competitors that one must pay for.
SE Labs (Reports Page)
MRG Effitas (360 Protection Testing Category)--
Brian - Windows 10 Pro, 64-Bit, Version 20H2, Build 19042
It is better to be hated for what you are than to be loved for what you are not.
~ André Gide