The Easysearch utility works fine with Windows 7 for me.
Anyway I'm pretty sure I can solve this for the OP, will write a quick guide. By Nod32 I'm going to presume you mean Eset Smart Security?
I'll provide notes and then if you need them screenshots, but see how it goes first.
1) Open Eset Smart security
2) Press F5 to open settings
3) Under the "Personal Firewall" on the left hand side select "Rules and Zones"
3) Click "Setup" under "Trusted Zones" which should be on the right hand side.
4) You should have a line or two of IPs, select the first and click next and change the option to "Allow Sharing" then click ok.
5) Repeat for each line listed.
6) Reboot PC.
That should sort it, it worked for me.