Why does my laptop keep disconnecting from Cisco AnyConnect VPN?

[tammygombez]

Hi everyone,

I've been having an ongoing issue with my laptop frequently disconnecting from the Cisco AnyConnect VPN. It usually stays connected for a few minutes, then suddenly drops the connection without any clear error message. Sometimes it reconnects automatically, but often I have to restart the VPN client manually.

Here are a few more details:

• Laptop OS: [Insert your OS and version, e.g., Windows 11 Pro, macOS Ventura, etc.]

• AnyConnect Version: [Insert version, if known]

• Internet connection: Stable (tested with streaming and downloads without interruptions)

• Connection type: Wi-Fi (though I’ve also tried Ethernet with similar results)

• VPN Server: Provided by my workplace

• Antivirus/Firewall: [List if any third-party security software is installed]

What I’ve tried so far:

• Reinstalling Cisco AnyConnect

• Flushing DNS and resetting network settings

• Disabling IPv6

• Checking with IT – they say everything looks fine on their end

• Using a different Wi-Fi network (same issue occurs)

Has anyone experienced this before or found a solution? Could it be a compatibility issue with my OS, or something else like aggressive power-saving settings?

Any advice or suggestions would be really appreciated!

Thanks in advance.

[pieterh]

first check that no other VPN software is installed on your device.
there is some communication layer component that competes with the other software

are there any logfiles present in: C:\ProgramData\Cisco\Cisco AnyConnect Secure Mobility Client directory on Windows. ?

[paulwelchh]

Try going into Device Manager, finding your Wi-Fi or Ethernet adapter, and disabling the option that lets the computer turn it off to save power. Also, check if any third-party antivirus or firewall might be interrupting the VPN tunnel—some of them don’t play nice with AnyConnect. Lastly, if you’re on Windows, a recent update could be the culprit, so checking Event Viewer for related disconnect logs might help pinpoint it. Check out resources like ideamaker. agency they sometimes cover troubleshooting guides for tech issues like this.