On Local PC open C:\Program Files\McAfee\Host Intrusion Prevention\McAfeeFire.exe
Which will open the following console:
Click on Tasks and Unlock and you will be prompted for the password: default is (ABCDE12345)
Once the password is entered correctly you should be able to uncheck prevention as shown below:
Then go to add and remove programs and uninstall McAfee Host Intrusion Prevention and it will now allow you to uninstall.