Cisco AnyConnect VPN is disconnecting over and over

My work laptop uses Cisco AnyConnect VPN. I am connected to my work laptop through an ethernet cable. Wifi is not allowed. I have been working for this company with this set up for almost three years and have not had any problems until December 2024.

In December 2024 I started having an issue with the VPN disconnecting and reconnecting over and over again to the point that it was doing it almost every minute. I contacted my work Help Desk and they determined that the issue was with my ISP which is Xfinity. I've been an Xfinity customer for about 11 years. My work Help Desk tech stated that they had worked for Xfinity in the past and that sometimes there is an issue with a Business line that affects the signals. They advised that I contact Xfinity and ask them to send a "reset signal" to my modem. It took several hours, but I was finally able to reach an Xfinity agent who got in contact with someone from the next tier/level of tech service and got authorization and the "reset signal" was sent. That resolved the issue at that time.

Since January 2025 I've had a few instance where I've lost the VPN connection but it was only once and after restarting the computer the VPN connected. It did not happen over and over like it did in December.

Starting last Tuesday, 03/11/2025, I began to have the issue again where the VPN would disconnect/connect over and over again until it was happening almost every minute. I contacted my work Help Desk and they did not see any issue on their side. Given that I had this same issue in December 2024, I tried to contact Xfinity to get a "reset signal" sent to my modem. I was unsuccessful. My work Help Desk person suggested that maybe a boost in speed may help. That night I increased my Xfinity internet speed 2X greater hoping that might help. It didn't. The next day I had the same issue. I had to take time off for work because I work in a production environment and cannot work without being connected to the VPN.

I spent several hours Friday trying to get to an Xfinity agent. I ended up chatting with at least 3 different agents. I could not get anyone to understand my request to reach out to the next level of tech service and request to have "reset signal" sent to see if this would work again. The last agent I chatted with did do a check of the modem's boot files. I asked for the results of checking the boot files and he told me there were files that could not be troubleshooted through the backend. I asked more than once about getting a "reset signal" sent to no avail.

He told me I needed to get a new modem. He reassured me that getting an XFi Complete modem would resolve my issue with the work VPN. It did not. I logged onto my work laptop yesterday (Saturday, 03/15/2025) and today (Sunday, 03/16/2025) and I have the same issue. The VPN stayed connected for about 15 minutes then began disconnecting/reconnecting almost every minute. 

I have tried: restarting and/or shutting down the work laptop; unplugging/plugging the ethernet cable; restarting the Gateway. Nothing has helped.

I am at my wit's end. I have increased my internet speed and have purchased a new Xfinity modem and I am still having the issue. I cannot work without being able to stay connected to my work VPN.