Antivirus blocking my Applications

[PugoOfficial]

As the title says my Antivirus is blocking my Applications like Steam and other games and when I download something from the web or update my flash player it wont let it says it has trojan or a virus already tried to unistall and reinstall should I replace my anti virus or just disable it because my system works fine if it's disabled but i'm worried about something might happen if it's disabled

[connorpiper]

I would replace your antivirus with Malwarebytes.

https://www.malwarebytes.org/

 

(Free version)

 

Also, windows comes with a pretty good scanner that works just fine if used properly. 

[EarthboundHero]

I would either install Microsoft Security Essentials or just get rid of it completely. If you get rid of it just be careful and run Malwarebytes on a weekly or monthly basis.