Considering the various types of CAP files there are, and that several different programs might be involved depending on the actual format being used in the file, you may find that the program Windows tries to use to open CAP-type files isn't the one you'd like.
N'iburu ụdị faịlụ CAP dị iche iche dị, na ọtụtụ ihe omume dị iche iche nwere ike ịdabere dabere na usoro a na-eji na faịlụ ahụ, ị nwere ike ịhụ na mmemme Windows na-agba mbọ iji mepee ụdị faịlụ CAP abụghị otu ị ga-achọ.