Step1: Find the McAfee Security Center taskbar icon. This is located in the lower right-hand side of your screen next to the clock. You may have to click on a small expansion arrow if Windows is set to automatically hide taskbar icons.
Step2: When you have found it, double-click on the icon. It may take a moment to load, but the McAfee Security Center window will come up, displaying multiple configuration options.
Step3: Click on "Configure" on the left side of the screen. If you don't see this option, click "Advanced Menu" at the bottom left to bring up the advanced options. Click on the "Internet & Network" tab, and click the button labeled "Disable Firewall."
If you want to delete Mcafee from your computer,follow this article-How to Delete McAfee From Your Computer.
Note: To get McAfee support ,you can reach online technical support service desk of V tech-squad at their Toll Free No +1-877-452-9201.