Server has a weak ephemeral Diffie-Hellman public key

[SimpleSi]

!!!!!!!

 

And then when I preswsed on details

Server has a weak ephemeral Diffie-Hellman public key

ERR_SSL_WEAK_SERVER_EPHEMERAL_DH_KEY
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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.

 

All I was trying to do was log onto my Unifi Controller from another PC

 

Does it know I couldn't care less about LAN securriuty!!!!!!!!

 

Simon

[HPlum78]

using chrome? I seem to remember an issue with this just put the error into Google and it will return a fix for you. Edited November 19, 2015 by HPlum78

[Julian]

Google philosophy is that Chrome is a “Safe Secure Browser”, if your data source does not show that it is safe, then Chrome does not want to talk to it!

 

You can try using a different browser IE will usually work, Firefox can usually be instructed to ignore the risk. You might also see if there is an update for your Unifi controller.

[cogrady84]

I had this with Cisco Prime Infrastructure 2.0, presumably the builtin SSL cert expired, I recently upgraded to 2.1, 2.2 and then 3.0 and no longer have this problem, again presumably because the SSL cert was renewed during the install for another 10 years or something. Moral of the story, try updating your controller to the latest release.