Internet not reaching upstairs

Some tips for improving WiFi performance;

http://corporate.comcast.com/comcast-voices/10-ways-you-might-be-killing-your-home-wi-fi-signal 

https://forums.xfinity.com/conversations/internet/answered-how-to-improve-your-xfinity-wifi/602da486c5375f08cd804f16 

https://www.xfinity.com/support/articles/improve-your-wireless-home-network 

https://www.xfinity.com/support/articles/internet-connectivity-troubleshooting?linkId=180985598 

https://www.cnet.com/how-to/home-networking-explained-part-2-optimizing-your-wi-fi-network/ 

https://www.smallnetbuilder.com/wireless/wireless-features/wi-fi-ping-spikes-causes-and-fixes/ 

There are other options. Google for WiFi repeaters / range extenders, WiFi mesh systems / pods, powerline ethernet adapters, MoCA adapters. Good luck !

Good luck !

Hello user_dgjsdy! Thanks for visiting our Xfinity Forum. We value you as a customer, and please know my team is always here to support you. I certainly know the importance of having full/good Wi-Fi coverage around the home, so I am sorry to hear the internet is not reaching upstairs. I see one of our amazing experts, @EG, shared some excellent and very helpful information for ways to improve that coverage. 

Did you find anything to be helpful with this issue thus far? 

Please let us know at your convenience, and we look forward to further assisting you.