This article applies to:

• Trustwave MailMarshal (SEG) 10.0.6 and below
• Windows Server 2012 R2
• Management Console website

Symptoms:

• Cannot connect to the Management Console website
• Chrome error: ERR_CONNECTION_RESET
• Firefox error: PR_CONNET_RESET_ERROR

Causes:

• TLS 1.1 and 1.2 for HTTPS is not enabled by default on Windows Server 2012 R2 as originally released. Current browsers require TLS versions above 1.0.

Resolution:

To resolve this issue, ensure that the Array Manager/Management Console server is up to date with Windows Updates. 

On a server that is up to date, no further change is required. 

• Registry edits to enable TLS 1.1 and 1.2 will not fix this issue.
• Registry changes are not required when Windows Updates have been applied.

Note: