Only do this if you are comfortable with technology. Downloading APKs from unknown sites is a security risk.
You can spend hours searching obscure forums for APKs and tweaking developer options, but these are temporary, frustrating, and pose a security risk to your home network. smart tv android 4.4.4 youtube not working
You need an external streaming device. Fortunately, a modern device draws less power than your TV's standby mode and costs very little. Only do this if you are comfortable with technology
Before trying technical workarounds, check these basic fixes: Verify Date & Time You need an external streaming device
Numerous user reports have confirmed that the official YouTube application has ceased functioning correctly on Smart TVs operating on . Symptoms range from continuous buffering and login errors to the app failing to launch entirely. This report identifies the root cause as Google’s deprecation of legacy API support, specifically the transition to YouTube Data API v3 , which is incompatible with older Android WebView and SSL/TLS security protocols present in KitKat. No permanent fix from Google is forthcoming; however, temporary workarounds are documented below.