As of the 20th of April 2015, Google's YouTube app will no longer be supported on certain Sony products. You can find out more via this official statement from Google.
Regrettably we are unable to offer a solution for this termination of service on the affected models themselves. However, there are still plenty of ways for you to enjoy watching YouTube.
Below are a few different methods/solutions you could use to access YouTube. Please select the relevant FAQ that is supported by your current device from the list of options below:
NOTE: YouTube and the YouTube logo are registered trademarks of Google Inc.