400 Bad Request Error

[visiovek]

I'm not able to access our webmin and webmin administration urls, it keeps returning an "400 Bad Request Error".

"Your browser sent a request that this server could not understand.
Reason: You're speaking plain HTTP to an SSL-enabled server port.
Instead use the HTTPS scheme to access this URL, please."

I don't know what caused this crash, any insight would be appreciated.

[Valerion]

There's an error in your configuration. You are either going to a page like http://host.domain:443/url or you have SSL directives in your vhost definition for webmin for port 80.