Do the following steps to fix codec error issue :
>> To fix this problem, simply download the codec you are missing.The Codec may be suggested by your media player or you can just follow the link on the audio tag section.
>> Find out the extension of that media file by doing a right click on that file and select the properties option. Then you can download a new media player that can play the files of that extension.
>> You can download all in “one media” players like VLC Player that can run almost every video format
>> In case none of the above option works then may be the concerning file is fake.