TLDR: Home Button > About > Reset TV
I woke up to Netflix giving me an error message ending in - 100. After 30 minutes of searching and following recommended steps like
- Reset router
- Check different connection
- Uninstall updates
- Uninstall completely
- Clear cache
- roll eyes at all fixed comments without explanation
The only option that ended up fixing it was going through the about menu and restarting the TV.
Hopefully this will save at least 1 person the trouble I went through.
My Sony TV let's me reboot with a 5 second power button press on the remote.