| Error Code | Description | Solution | |------------|-------------|----------| | | There is a problem with this Windows Installer package. | Run msiexec /unregister followed by msiexec /regserver . Then retry installation. | | Error 1603 | Fatal error during installation. | Uninstall any previous OpenVPN versions using the Microsoft Program Install and Uninstall troubleshooter. | | Error 1920 | Service 'OpenVPN Service' failed to start. | Ensure no other VPN service is conflicting (e.g., Cisco AnyConnect, WireGuard). Disable conflicting services. | | Pending reboot | A previous installation requires a reboot. | Reboot the machine, then run the MSI again. | | Digital signature invalid | The file is not verified or the certificate is revoked. | Do NOT proceed. Delete the file immediately and download from a trusted source. |
: Includes support for OpenVPN Data Channel Offload (DCO) , which improves connection speeds by offloading data processing from the user space to the kernel. x64 openvpnconnect3804528msi verified
Here is a useful guide on what this file is, how to verify it yourself, and how to install it. | Error Code | Description | Solution |
: Installation requires administrative privileges to install necessary network drivers, such as the TAP or Wintun adapters. | | Error 1603 | Fatal error during installation