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Visitor

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3 Messages

Monday, June 23rd, 2025 8:09 PM

cm mac number couldn't be identified

New modem and the app says the CM MAC number couldn't be identified.

Problem Solver

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689 Messages

7 days ago

Is the new modem from xfinity or third party? 

Visitor

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3 Messages

7 days ago

Got it connected after working with support via the xfinity app chat feature. They did something for about 15-20min and it started working.

Only issue now is really slow uplink speed (~5-6Mbps)

Official Employee

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868 Messages

@user_nrqes5  Thanks for posting and following up with the resolution. Glad to hear our support teams were able to help. What speeds do you get with a laptop connected directly to the modem, using this http://speedtest.xfinity.com/ page? 

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Visitor

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3 Messages

That speed is when directly connected to the modem. Also tried multiple computers and get the same slow uplink speed.

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