No McAfee products are compatible with those operating systems as they have long ago become obsolete.
I believe that Malwarebytes Free anti-malware (not an anti-virus) is still compatible (see the last link in my signature below for it's download link) but as far as an anti-virus goes I recommend you do an online search for that as I do not know of one.
Moved to General Discussion.
You can (with a little perseverance) get anti-virus coverage for Windows 98. Your best bets would seem to be Clamvir and Avast. For Windows 95 it might be more difficult.
For Windows 98 see the following -
For Windows 95 it's a question of searching and hoping. Sophos only withdrew products covering Win95/98 as late as last year so there's still a possibility of finding something. Again, Clamvir and Avast seem the front-runners.
windows98,windows 95, you are nostalgic
As Ex_Brit mentioned ; there is no stinger for windows 98 - windows 95. According to the minimum and recommended system requirements, the new stinger is not compatible with the Windows 98 or Windows 95. But , i can provide you a stinger were you can run in your Windows 98 or Windows 95 . Please use the below URL :
Let me know the outcome