Hi there! We recommend first restarting your router, to ensure it is not an Internet connectivity issue. If the issue persists, try a cold boot restart. With the Remote: For most people, the easiest way is to hold down the Power button on the Samsung TV remote until the TV turns off and on again. This should only take about 5 seconds. With the Plug: If you do not have the remote, unplug your TV from the wall outlet or surge protector, leave it unplugged for 30 seconds, and then plug it back in. If you are still having issues, please reach out to Samsung TV Support at:
― Phone: 1-800-SAMSUNG / Available 8 AM - 9 PM EST, Mon - Fri
― LiveChat or Email: https://www.samsung.com/us/support/#contact_us_for_support
We look forward to hearing from you. ^Gina