2 Messages
Can't register new modem
I have tried a few times to register a new cable modem for my connection. Every time I try in the mobile app it is generating a generic "the cm mac number couldn't be identified" error. What typically causes this issue? The modem is on the compatible list that Xfinity has online.
Accepted Solution
XfinityAirelle
Official Employee
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2.6K Messages
10 months ago
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