If anyone finds this thread using Google.
I was able to fix it with the following command:
openssl rsa -in client.key -out client.key
It will ask for the password and then overwrites the client.key file without the annoying password. 😃
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Remove the password from an OpenVPN key
The user's client.key generated by `openvpn --genkey` is an OpenSSL RSA key. You can use `openssl` commands on the key. This will overwrite the existing user.key file:
openssl rsa -in client.key -out client.key
