Windows built-in L2TP/IPSEC VPN Client fails to connect when either side is behind a NAT firewall
In particular this can occur when connecting from Windows client to a Windows Server L2TP/IPSEC VPN (lol...)
To allow the client to connect in such situations, create a fixvpn.reg file containing:...
Run the following in a command prompt or add to a .bat file and execute it. You might need to execute this for each user on the PC.
winget uninstall Microsoft.OneDrive --accept-source-agreementsOpenVPN Troubleshooting
Peer certificate verification failure
OpenVPN Connect v3 client using a openvpn configuration for a Synology NAS running OpenVPN VPN Server cannot connect.
Errors: “Connection Failed. There was an error attempting to connect to the selected server"
"Error message: Pe...
Process Monitor is an advanced monitoring tool for Windows that shows real-time file system, Registry and process/thread activity.
- https://docs.microsoft.com/en-us/sysinternals/downloads/procmon