VSphere Client SSL error build 10041

Question

So I'm seeing an odd error after upgrading to build 10041 (from 9926). The vSphere client (both 5.1 and 5.5) will no longer connect to my vCenter instance. I receive the following error
"vSphere Client could not connect to "<server>" An unknown connection error occured. (The request failed due to an SSL error. (The request was aborted: Could not create SSL/TLS secure channel.))"
Checking the event log I see Schannel 36888 errors with the following message: "A fatal alert was generated and sent to the remote endpoint. This may result in termination of the connection. The TLS protocol defined fatal error code is 40. The Windows
SChannel error state is 813."
I managed to find out that error 40 means "handshake_failure". The error state (813) I haven't been able to find additional information on.
When I look at the vpxd.log file I see the following log lines which seems to confirm its a handshake error.
2015-04-02T13:26:08.442-05:00 [07548 error 'Default'] SSLStreamImpl::DoServerHandshake for SSL(TCPStreamWin32(socket=TCP(fd=38244) local=xxx:443,  peer=yyy:64839)): SSL_accept failed with BIO Error
2015-04-02T13:26:08.442-05:00 [07548 warning 'ProxySvc'] SSL Handshake failed for stream TCPStreamWin32(socket=TCP(fd=38244) local=xxx:443,  peer=yyy:64839), error: class Vmacore::Ssl::SSLException(SSL Exception: BIO Error)
Does anyone know if there were any changes around Schannel that would be causing a handshake error? I can't seem to find any additional information. It looks like vCenter accepts TLS 1.0, which in IE at least is enabled.

Answer 1

Hi Jeff,
I think we'd better involve the VMware side to further look at this issue.
For Windows 10 build 10049, you might need to notice the information below:
No access to Internet Protocol (v4 or v6) in 10049
Best regards
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