Comodo antivirus only, get annoying message

I run Windows Firewall and Comodo antivirus. Every time I start the computer I get the message “Comodo Security Agent can’t be started”. What should I do?

Does running the diagnostics show any problems?

Also, which version of Comodo Antivirus do you have installed?

The diagnostic finds no errors. The file cfpver.dat says “6.2.285401.2860”.

What OS?
Edit:

  1. Look in the startup OS.
  2. Re-install the AV. Disabling WinF.
  3. Then turn on the WinF.