Thank you for posting this solution. Work perfectly
I tried everything in this thread and others several times. Factory reset Roku, reset cable modem, setup my wifi from the ground up...I thought I was gonna need Rogaine after all the hair I pulled out!
What fixed this for me was to simply change the Firewall setting on my Cable modem/router from "Medium" to "Low".
Hope this helps others from premature balding!
I'm living here in the future compared to this post, but I had the same symptoms:
What did work for me to restore to Roku and iPad. In my case, I have my own modem and separate router. It seems the original poster had a combo modem / router; I don't know if this is why my solution - inspired by @shermintoga 's original - is slightly different (I didn't have to disconnect the coax).
What had not worked:
Hope this helps someone in the future.
Thank you very much
I actually found the REAL fix. It is an Xfinity issue. It has to do with stale login information.
Remove the Xfinity channel from the Roku. Restart the Roku. Use your smart phone to log into the Xfinity stream mobile app. Log out there. Open a browser on the same smart phone and log into your Xfinity account. Log into the Xfinity app on the same phone. Reinstall the Roku Xfinity app. Should be prompted to reactivate the Roku device. Go to xfinity.com/authorize to activate on the smart phone. Fixed.
I tried several actions, and this was the only one that helped. Crazy that years later a power cycle is the only solution, but simply disconnecting and restarting the modem did the trick.
highlight xfinity app. press options button. click restart. your guide should work again.
I’m Having a Problem Connecting To The Xfinity App from every bedroom to our house When I click it to the remote Go to the app and it just goes back to the home page I did it a lot of times and there’s nothing we can do, We Tried to Reset and Sign back in and we did it but it still pop right back to the home page what we can do to fix this problem
Try removing the Xfinity app, restart your Roku device from Settings->System or Settings->System->Power (as appropriate), and add the app again. Also, restart all of your network equipment - gateway/modem/router.