Sling TV is supported on the most recent version of Google Chrome. Normally, Google Chrome updates automatically. If you still need to update your browser to watch Sling TV, open Google Chrome.  

In the top-right corner, click on the Settings icon.

Then click Update Google Chrome. If you do not see this option, this means you are on the latest version.

Finally, click relaunch.

To learn how to see what version of Google Chrome you are using, click here.