IP Office R9.0 and R9.1 (but may affect earlier versions)
Google Chrome version 45 (but may affect earlier versions at a later stage)
Users are unable to access Web Manager and/or One-X Portal due to the following error:
Server has a weak, ephemeral Diffie-Hellman public key
This error can occur when connecting to a secure (HTTPS) server. It means that the server is trying to set up a secure connection but, due to a disastrous misconfiguration, the connection wouldn’t be secure at all!
In this case, the server needs to be fixed. Google Chrome won’t use insecure connections in order to protect your privacy.
Use Internet Explorer/Firefox or upgrade to R9.1.4 (which contains a fix for this issue).