Hello @user_ba035c! Thank you for reaching out on our community forum. I hate to hear you're experiencing this error and having trouble getting it resolved. We'll be happy to help. Could you please send our team a direct message with your full name and full address?

• Click "Sign In" if necessary

• Click the "Direct Messaging" icon or https://comca.st/3ACZ1yz

• Click the "New message" (pencil and paper) icon

• The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there

• - As you are typing a drop-down list appears. Select "Xfinity Support" from that list

• - An "Xfinity Support" graphic replaces the "To:" line

• Type your message in the text area near the bottom of the window

• Press Enter to send it

This issue has moved up to the technical team to figure out.

I am having this same issue. Has it been resolved?

No, it hasn’t. I have placed several calls into Xfinity  and have had 5 ticket numbers issued with the their technical team to figure it out. The last time I called for a follow up I was told they closed the ticket. I have gotten no where.. I have given up after spending hours on the phone with them. I’m under contract with them until March 2023. I have tried to cancel my contract with Xfinity and they offered to send me a wireless cable box with a monthly rental charge for each TV. This is not what I signed up for.
All I can say is good luck and hope you can find a solution to your problem. Warning Xfinity is horrible on follow through.

I am having the same issue with the error message. It keeps logging me off. I also have spend literally hours on the phone without any resolution. Multiple tickets with empty promises. It makes no sense.  This week alone I am having to log back into the stream maybe 12-15 times. So frustrating they have no idea why this is occurring.  

I never did find a resolution to my problem. I canceled my service just this month and switched to Direct TV streaming. My tv is up and running again.

Anyone figure this out?? Same issue here

I have to activate my Samsung UN55NU8000 9 of 10 times to watch xfinity.  It works fine on all other streaming apps.   Activation is deleted after turning off the tv,  however there is a pattern when it is turned off which program I was watching that sometimes it is not deleted.  No one seems to know why and any fix. The tv works impeccably with xfinity the exception. Unusually I have two other same series ie 8000 samsung tv's but different sizes 65" and 43' that do the same only occasionally. 

I have to activate my Samsung UN55NU8000 9 of 10 times to watch xfinity.  It works fine on all other streaming apps.   Activation is deleted after turning off the tv,  however there is a pattern when it is turned off which program I was watching that sometimes it is not deleted.  No one seems to know why and any fix. The tv works impeccably with xfinity the exception. Unusually I have two other same series ie 8000 samsung tv's but different sizes 65" and 43' that do the same only occasionally. 

I have the same issue with my LG smart tv and Roku devices. I think this is xfinitys way of ensuring people purchase cable boxes. Customer support just walk through the script and say to uninstall the app ultimately. Very disappointed that this paid service hasn't worked for months. Works fine on tablet and phone but I want to watch my televisons

What is the actual solution to this error at this time? Why are users instructed to private message some rep to gain support with this error? There are no solutions or resolutions posted for the public, for us to try and correct the error on our own. Turning it off and back on again is not troubleshooting. In case someone thought it was. I see zero support about this error in any of your forums. This all seems very phishy. Xfinity should be better than this. 

I have tried every possible troubleshooting step to correct this error in house. What is the actual resolution to error TVAPP-00166 at this time? I have 21 Samsung TV's to complete this update on, so it better not be some crazy time consuming solution to get this stream app actually streaming. This error is not isolated to any 1 system for me either, it is seen on every single TV I try and install your application on..... It just does not work, plain and simple.

Correct this, or credit my account for services lost.

I also have the same issue when I launch Xfinity stream App on my Smart Samsung TV. Called Xfinity support, as they suggested power off/on TV, but no luck. Any idea hoe to fix?

TVAPP-00166