Remove NDIS firewall filter (McAfee Internet Security)

A component of McAfee's Internet Security Suite, the McAfee Firewall Network Filter Miniport is a firewall adapter that blocks unwanted users from accessing your computer and Internet connection. The firewall adapter is installed within your computer's configuration and can cause issues with virtual private networks (VPN), email applications, peer-to-peer applications and other programs that are trying to access your computer's Internet connection. You can remove the McAfee Firewall Network Filter Miniport and keep the McAfee Internet Security Suite installed on your computer system.

  1. run the windows terminal:
    Start -> Run -> type "cmd" and press Enter
  2. stop McAfee Host instrusion Prevention:
    type "NET STOP enterceptagent" in the terminal
  3. stop McAfee Miniport Driver:
    type "NET STOP firepm" and press Enter
  4. change to directory where the driver lies:
    type "cd Program Files\McAfee\Host Intrusion Prevention\inf\" and hit Enter
  5. remove ndis network driver:
    type "installfirehk /u"
  6. restart the host intrusion prevention service:
    type "NET START enterceptagent" and hit Enter

That should be all. Maybe you need to restart your computer to get rid of all temporary files.

(source)