Visitor

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3 Messages

Monday, April 20th, 2026 6:38 PM

Cisco VPN Anyconnect stopped working

About three days ago (after years of using) my daughter started experiencing issues with connecting to her George Mason University VPN via vpn.gmu.edu, vnp.gmu.edu/student via Cisco AnyConnect client. Cisco client cannot reach the domain, suggesting No Internet. Internet keeps working just fine.

She connects fine via Hot Spot (AT&T cellular data), from campus Wi-Fi, from the local public library. Several days GMU IT could not resolve the issue, narrowing it down to our Internet provider. Everyone else connects as usual (Verizon, AT&T customers).

How can I reach out to Comcast Infinity so they could check their recent firewall changes and white-list George Mason University VPN domains?

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Official Employee

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2.2K Messages

11 days ago

Hi there, @user_99mftr. Thanks for reaching out to us here on the Community Forum. We can check to make sure the connection itself is healthy. As far as basic troubleshooting, you would want to make sure that the device has been updated recently. Have you reset the power for the modem since this issue began?

Visitor

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3 Messages

@XfinityFrank​ Thank you very much for your response. This appeared to be the case of forced obsolescence. 
GMU updated their VPN and all looks rosy; new client has higher requirements. Arris says firmware and software updates must be pushed by the ISP… The issue is resolved by replacing otherwise perfectly fine-working modem with the new one (200$). Similar story with new Xfinity App that doesn’t work on iPhones X and older… I am also affected. 

Visitor

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1 Message

11 hours ago

My work "Cisco" VPN stopped connecting. It says it's timing out. I have contacted my work, and since I can connect via my cell phone hotspot, that this issue is with Xfinity. I can connect to the internet via my work laptop, it's just the VPN that will no longer connect. I have already disabled Advanced security setting for Xfinity, and created a new gateway domain. 192.168.0.1, and still not working. 

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