Votes:
I get the following error "The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel"
Created on Oct 11, 2012 6:23:16 PM by
Last change on Oct 12, 2012 8:06:10 AM by
1 Reply
Votes:
The Windows Update KB2661254 disabled the authentication mechanism with weak certificates that have a key-length of less than 1024 bit. If you installed this update on a computer running the PRTG probe, this can affect your VMware sensors.
vCenter-Server 4.0 used certificates with 512 bit key-length. You may be affected too if you updated to a newer version, because the certificates are kept during an update!
A new installation of vCenter-Server 4.1 or higher generates certificates with 2048 bit key-length and is not affected.
Please refer to the VMware knowledge base at http://kb.vmware.com/kb/2037082 for further information on how to regenerate certificates on your existing installation.
At the Microsoft knowledge base (http://support.microsoft.com/kb/2661254) you get a solution to re-enable weak certificates with a registry key at the section Allow key lengths of less than 1024 bits by using registry settings.
This is not recommended and should only be used as a quick workaround and should be reverted as soon as possible after replacing the certificates!
Created on Oct 11, 2012 6:25:42 PM by
Last change on Oct 12, 2012 8:23:51 AM by
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