Many a times, you might have come across a situation when you are unable to see some embedded videos on your web browser, instead you are getting Mac missing plug-in error. There are various of reasons behind the emergence of such panic issue, the most common among them is the working over unsupported platform or due to the uses of outdated web browsers. Apart from that, there are various of other factors too that are quite responsible for the emergence of Mac missing plug-in error. But, now you don't have to be worried! As you are on the right channel.
So, what you have to try is to update your web browser with the latest version. However, if you are still getting Mac missing plug-in error while working with your web browsers then, you should also try to re-install the Internet browsing tools that you are currently using. But, this method also fails to rescue the problem then, its a OS issue. Hence, try to formate your operating system and then, re-install the web browser. This, will surely sort out your problem. But, doing so will wipe out all your saved files from your computer. Hence, in such situation and to recover the lost data back, you should make use of Mac data recovery software, whose demo version is available here.