Utorrent firewall problem

Hi,

When I start utorrent portable it writes on log this error:

Error opening Windows firewall: 0x80070005 Access denied

I am using avast latest version. But it is the free version which not includes Firewall.

Also I have give exception from Windows 8.1 default firewall on utorrent to access Prive and Public network.

Why this error is writing?

Thank you