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Fixing IPsec RasDialException (Windows 10)

DNS cache reset and renew IP configuration | Fixing IPsec RasDialException (Windows 10)

First exit the VPN Manger if you have not done this already. In order to execute the following commands you require a Command Prompt with administrative privileges. If necessary this can be started using the Start button -> All apps -> Windows System -> Command Prompt (right click -> More -> Run as administrator). The security question has to be answered with a click on "Yes".

DNS cache reset and renew IP configuration

In the Command Prompt execute the following commands one after another to reset the DNS cache and renew the IP configuration: netsh int ip delete arpcache , ipconfig /flushdns and ipconfig /renew .

Resetting IPv4/IPv6 configurations and Winsock | Fixing IPsec RasDialException (Windows 10)

Resetting network configurations and Winsock

In the Command Prompt execute the following commands one after another to reset the network configurations and Winsock: netsh int ip reset , netsh int ipv6 reset and netsh winsock reset . Then reboot the computer.

Resetting the WAN Miniport adapters in the Device Manager | Fixing IPsec RasDialException (Windows 10)

Resetting the WAN Miniport adapters in the Device Manager

Administrative privileges are required for this. The Device Manager can be found using the Start button -> All apps -> Windows System -> Control Panel -> Hardware and Sound -> Device Manager. In the menu activate View -> Show hidden devices so all devices are visible. Then in the Network adapters section right click each WAN Miniport adapter and uninstall it. Afterwards in the menu choose Action -> Scan for hardware changes to reinstall the adapters again. You can also start the VPN Manager and establish a connection using IPsec to bring the WAN Miniport adapters back.

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