If your cookies are outdated or corrupted then Netflix won’t play on your Mac.
Uninstall Silverlight On Mac Automatically Fix Silverlight Netflix Issues On Older Macs
Netflix Display Errors In Safari Using HTML5 Here then are the most common ways to fix Netflix streaming problems on a Mac. Often, these streaming issues can be fixed with a few of the solutions suggested here. The most common Netflix playback issues on macOS are things such as cache problems, plugin failure error messages, a black screen with no player controls, external monitor issues, mysterious n8151, n80 error codes and other problems caused by adware. This means there’s also no official way to download Netflix content on a Mac although there are workarounds to watch Netflix offline and download shows on a Mac.
Unfortunately there’s no official Netflix app for Macs so Netflix streaming problems via a web browser are very common on macOS. There’s nothing more frustrating than kicking-back to watch a movie or TV series and finding that Netflix is not working properly on your Mac.
