Take a look at https://www.malwarebytes.com/premium/  I think they may
still support Wxp. 


On Mon, 25 Feb 2019 11:38:16 -0000, "Flyiñg Ñuñ 2°¹9 + on desktop"
 wrote in  

>Until earlier in the year I have successfully been running an old 
>computer with Windows XP Home Edition and a AMD processor (x86 Family 6 
>Model 8 Stepping 1 AuthenticAMD~1833 MHz),  whatever all that means.  I 
>have been running Avast Premium Internet Security for several years.  To 
>all intents and purposes it seems to be running well but I noticed a 
>couple of days ago that the firewall was switched off and despite my 
>efforts it just refused to be switched on,  giving a curt error message 
>"Firewall cannot be switched on.  During by unsuccessful efforts I also 
>spotted that,  although the latest virus definitions update was dated as 
>02/02/2019 it refused to update but told me that I still had the current 
>update.  I tried to install the current Avast free as a back up until 
>the problem was sorted out and but as I tried to run it I immediately 
>got the error message:    "We are sorry but Avast Antivirus cannot run 
>on your computer because your processor does not support SSE2 
>instruction set." So I presumed that this was probably the reason that 
>my Premium installation had stopped working.  :(
>    All I can think of is to use Clamwin which does in fact run and 
>updates it's virus definitions daily,  but this doesn't offer as much 
>protection as the Avast or AVG offer.
>    Has anyone in this Newsgroup any ideas as to how I can improve my 
>security.  Please don't suggest chucking the archaic computer in the 
>skip! Thanks.  :)
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