Hello .
I successfully downloaded Sql Server 2012 Express installation package.
I launched the intsallation and after a few minutes it ends with the following errors :
"Database Engines Services" (not installed)
and
"Sql Server Replica" (not installed)
I read the errorlogs in : "Microsoft Sql Server\{Installation}\MSSQL|Log "
and it seems I have problems with SSL certificate :
2015-05-29 20:01:55.36 spid11s Error: 17190, Severity: 16, State: 1.2015-05-29 20:01:55.36 spid11s Initializing the FallBack certificate failed with error code: 1, state: 20, error number: 0.
2015-05-29 20:01:55.37 spid11s Unable to initialize SSL encryption because a valid certificate could not be found, and it is not possible to create a self-signed certificate.
2015-05-29 20:01:55.37 spid8s Failed to verify Authenticode signature on DLL 'C:\Program Files\Microsoft SQL Server\MSSQL11.MSSQLSERVER2012\MSSQL\Binn\ftimport.dll'.
2015-05-29 20:01:55.37 spid11s Error: 17182, Severity: 16, State: 1.
2015-05-29 20:01:55.37 spid11s TDSSNIClient initialization failed with error 0x80092004, status code 0x80. Reason: Unable to initialize SSL support.
2015-05-29 20:01:55.37 spid11s Error: 17182, Severity: 16, State: 1.
2015-05-29 20:01:55.37 spid11s TDSSNIClient initialization failed with error 0x80092004, status code 0x1. Reason: Initialization failed with an infrastructure error. Check for previous errors.
2015-05-29 20:01:55.37 spid11s Error: 17826, Severity: 18, State: 3.
2015-05-29 20:01:55.37 spid11s Could not start the network library because of an internal error in the network library. To determine the cause, review the errors immediately preceding this one in the error log.
2015-05-29 20:01:55.37 spid11s Error: 17120, Severity: 16, State: 1.
2015-05-29 20:01:55.37 spid11s SQL Server could not spawn FRunCommunicationsManager thread. Check the SQL Server error log and the Windows event logs for information about possible related problems.
This is just one log file : others report similar informations.