Please check your protection status in MCafee-Security Center and fix any problems.

Hello Experts,
I have received a warning message from McAfee. It is indicating my machine not fully protected. The screenshot of the warning message is as below. I received this message during startup. Have you any idea for the message? Please help me to understand it.
Thanks in advance.

Your computer is not fully protected.
Please check your protection status in McAfee Security Center and fix any problems.
