McAfee antivirus login is not complicated. Instead, it is simple as many people ask us questions such as how to log into mcafee account or how do I access my mcafee account and others. In fact, mcafee com sign in can be done by following a few steps. However, irrespective of successfully setting up the McAfee account, you might see McAfee certificate error which can crop on the screen for many reasons which will be discussed later in this blog. FYI, we have explained earlier in our blogs on how to log into a mcafee account and how to access my mcafee account.