Delete it and download the latest version.
CF is frequently updated and you should not be using old versions.IMPORTANT!
: If you ran or want to run ComboFix on your own due to malware infection, please be aware that using it is only one part of the disinfection process. Preliminary scans from other tools like DDS
should be used first because they provide comprehensive logs with specific details about files, folders and registry keys which may have been modified by malware infection. Analysis of those logs allows planning an strategy for effective disinfection and a determination if using ComboFix is necessary.
Further, when issues arise due to complex malware infections, possible false detections, problems running ComboFix or with other security tools causing conflicts, experts are usually aware of them and can advise what should or should not be done while providing individual assistance. When false detections are identified, experts have access to the developer and can report them so he can investigate, confirm and make corrections. Those attempting to use ComboFix on their own do not have such information and are at risk when running the tool in an unsupervised environment.
If you ran or want to run ComboFix on your own just to see what it does or finds, please be aware that ComboFix was never meant to be used
as a general purpose malware scanner like SuperAntispyware or Malwarebytes' Anti-Malware which scan individual drives or different folders on a computer for viruses. Using this tool incorrectly could lead to disastrous problems with your operating system such as preventing it from ever starting again.
Please read the pinned topic ComboFix usage, Questions, Help? - Look here