There are so many prior discussions on topic that to reduce the causes we need more detail. What malware did you remove and what antivirus/other software is installed?
My windows 8.1 firewall has been disabled, possibly by some malware that has since been removed. nothing that I've tried seems to be able to turn it back on. I'm really frustrated because this in turn seems to effect new apps using or loading as well as other things. Does anyone have any suggestions to turn it back on. I've tried all the standard ways as well as other suggestions.