Keep reading so you can learn How to Fix AnyConnect was not able to Establish, because today we will tell you everything you need.
If the error message indicates, "AnyConnect was not able to establish a connection to the specified secure gateway," then that would imply that the establishment of the VPN connection actually failed during or right after the login process. This simply means that the client failed to create a connection to the VPN's secure gateway on that attempt .
No connection could be established between AnyConnect and the designated secure gateway.
The most frequent ones are the restrictions from the firewall, problems with Network Address Translation, and wrong or untrusted SSL certificates. Other possible causes could be unstable network conditions, fresh operating system updates that affect VPN drivers, or VPN server license constraints.
Let's look at some of the ways we could fix this error.
1. Antivirus OFF
Theoretically, antivirus applications can mistake the appearance of VPN traffic as some sort of threat and interfere with or block the ability to connect to a VPN. If you find that you are having problems securely connecting using AnyConnect, turning your antivirus software off temporarily should allow you to solve the problem. This is to try to determine if the antivirus is the culprit because of overly stringent security settings when such issues arise in establishing a connection. You should put this back on if you want the gadget to remain safe while testing.
2. Disable Internet Connection Sharing Service
You can try to see, for troubleshooting VPN issues, if the problem goes away when the Internet Connection Sharing service is disabled. This service can interfere with network routing, which includes VPN tunnels. By disabling ICS, your AnyConnect connection to the secure gateway will be simpler and more stable without conflicts between your local network and the VPN client. Now, removing any conflicting network services will help in preventing the blockage or redirecting of VPN traffic. Press Windows + R to open the services menu. Enter consequently.
When the services can be viewed, locate the Internet Connection Sharing service on the opened window. Right-click on it and select Stop.
Disable ICS Operation
Close the Services window.
3. Disable Internet Connection Sharing
It is as simple as checking that the Internet Connection Sharing is disabled to troubleshoot VPN connections. Since ICS connects to the internet via multiple devices, it interferes with the VPN tunnel. Turning it off eliminates interference and permits the VPN to create a line of sight to the secure gateway without interferences.
Open the System Control menu.
Click "Network and Internet Sharing." Set the adapter properties Centralized Network and File Sharing
Right-click the shared network connection, and open properties.
In the properties window, go to Sharing menu.
Click "Remove this computer's Internet connection from other users on the network" button.
Select OK.
4. Click the option Connect to current Network in AnyConnect VPN
When selected in AnyConnect VPN, it will be set to utilize the current active network connection. This reduces errors caused when trying to connect through other unconnected networks. In particular, it means that, after changing networks or making other configuration changes, this option ensures the VPN uses the correct network. This reduces the chances of a failed connection and removes network noise for better stability in connecting.
Right click from the AnyConnect Client and select Network from the contextual menu.
Select Connect only to current network, then click
The AnyConnect Client by Cisco
5. Try a Different Connection
Try to connect with some other network, like a mobile hotspot or any other Wi-Fi; this can get around the limits and blocks that are on your main connection. Some networks block the flow of traffic from VPNs due to strict policies. In case the VPN is failing in its connectivity because of some configuration issue related to a particular network or router, using the other network will simply fix it.
We actually do hope that this guide on How to Fix AnyConnect was unable to Establish helped you a lot and that you got much from it.
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