Windows 10 is fully compatible with MKV as well as FLCA files, which means that there is no need for people who are using Windows 10 to download and install MKV Player. However, people who are using Windows 7 or older play find that the software is a useful tool.
OK @Dharmendra, I was able to google search and bring out one of my old posts:) here I too had Shark's codecs for a long time but later decided to do away with that. I no longer have it on my PC now.
Currently I am out of touch with all these and that is why I recommend that you do a thorough google search on the subject. Before experimenting with different ways/codecs please do increase the space available for system restore points manyfold, always create a system restore point before, so that you can revert to the old point should you experience any problem.
Nothing like trying out the many ways and finding the one that suits you. EDIT: Here is another reference. After a long time I just played an MKV movie on my Desktop just to confirm my WMP12 is set up the minimal way to play it using FFDShow and Haali Media Splitter.Hmmm. These haven't been updated since 2011.
And that was the time when I gave up on Shark007's codecs and completely uninstalled it. I also hold the puritan view that any video should be played in its original format and any conversion will result in less than 'original'.:) If you have an mkv play it as an mkv. If you have a bluray play it as a bluray.