VMware VCenter Server 5.1 Update 1 - Server has a weak ephemeral Diffie-Hellman public key

Senior IT System Engineer
Senior IT System Engineer used Ask the Experts™
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Hi,

When using Google Chrome,

I cannot open the vSPhere Web Client anymore with this error message:

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.

So what can I do to access the Web client ?

Thanks,
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Senior IT System EngineerSenior Systems Engineer

Author

Commented:
using IE 11 in my Windows 8.1 gives me this yellow bar:

This browser is not supported. Some features might not work correctly. A minimum of IE7, Firefox 9, or Chrome 14 on Windows or Linux is required. Read the vSphere Web Client help for details.
VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017
Commented:
from the 1st September 2015, Chrome have introduced a new security fix, for insecure SSL/Ciphers certificates.

Update certificates or

see here for a workaround

https://community.spiceworks.com/topic/1173437-error-in-google-chrome-and-other-browsers-err_ssl_weak_server_ephemeral_dh_key

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