Visitor
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3 Messages
Modem Not Working in other room.
We just moved into a new place and tried to get the internet set up in our office but we’re having trouble. So we decided to set it up in the living room to make sure we were getting service and the equipment worked, and it did! It worked great in the living room. Today I am trying to move it into the office so we can use it on our computers but now the xfinity app is telling me that this modem is not compatible even though it was working amazing in the living room 30 minutes ago. Is anyone able to help? The modem is an Arris CM8200.
BruceW
Gold Problem Solver
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26.4K Messages
23 days ago
Is that a typo? The CM8200 is not included on their recommended/compatible list at the "All Compatible Devices" link near the bottom of https://www.xfinity.com/support/devices (at the moment it points to https://assets.xfinity.com/assets/dotcom/projects/cix-4997_compatible-devices/2025.03.25%20Full%20List%20of%20Compatible%20Devices.pdf, but this changes from time to time).
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RB_MD
Contributor
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21 Messages
23 days ago
Not sure why it would work in one room and not the other, but afaik, Xfinity considers the CM8200 to be a rental device and usually blocks them.
Take a look at the CM8200 reviews on amazon for more details.
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XfinityBillie
Official Employee
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3.3K Messages
21 days ago
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