SSMS Errors and event id 36888 and 36882

Question

Hallo to everybody,
I'm facing a tricky situation from which I'm not able to come out.
Because of an Hard Drive failure, I had to rebuild my workstation.
Apart from the hard drive changed, both hardware and software environment are the same as before, when everything was working correctly. I'm using Windows server 2012 R2 as O/S, and a series of MS software, among them, the last three releases of SQL Server
(2008R2, 2012 and 2014).
But differently from first setup, now because of the hurry to rebuild the system, I installed all the software without taking care of the "chronological" order. Meaning I installed SQL Server 2014 as first, then 2012 and 2008R2 as last one.
My system is joined to a domain and, summarizing, everything works correctly (as before hard drive failure) but the ability to connect to remote (within domain) SQL Server instances through any of the SSMS edition.
When I try, I get strange behaviour, like errors while connecting (sometimes), errors while retrieving data (right click on a table and EDIT top <n> rows), or sometimes even a partially filled grid without any error. For partially filled, I mean a
result set in which not all requested rows are returned.
The common elements are: The error source in message box is always "System.Data" and the error message is "Internal connection fatal error".
Below you can find a more detailed technical description of the error message.
After some investigation, I found that in correspondence to any of these user interface errors, other errors messages are logged in System Event Log in this sequence:
1) Event 36888 source Schannel:
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 48. The Windows SChannel error state is 552.
1) Event 36882 source Schannel:
The certificate received from the remote server was issued by an untrusted certificate authority. Because of this, none of the data contained in the certificate can be validated. The SSL connection request has failed. The attached data contains the server
certificate.
Needless to say, SQL Connections are NOT configured to be encrypted, neither on client nor on servers, SSL certificates are the self generated ones, so there should be no reason at all for these errors.
I already browsed the Internet searching for a solution, but I was not able to find something matching my situation. For instance, the closest one that talk about "wrong synonym definition" is not valid in my case, as there
are no wrong synonym.  
I strongly hope that someone of you could be helpful before I decide to start reformatting and reinstalling everything from scratch keeping the "correct" order during installation.
Thank you in advance,
===================================
Internal connection fatal error. (System.Data)
Program Location:
   at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   at System.Data.SqlClient.SqlDataReader.TryCloseInternal(Boolean closeReader)
   at System.Data.SqlClient.SqlDataReader.Close()
   at Microsoft.SqlServer.Management.Smo.DataProvider.Close()
   at Microsoft.SqlServer.Management.UI.VSIntegration.ObjectExplorer.NavigableItemBuilder.NavigableItemBuilderDataReader.Close()
   at Microsoft.SqlServer.Management.UI.VSIntegration.ObjectExplorer.NavigableItemBuilder.NavigableItemBuilderDataReader.System.IDisposable.Dispose()
   at Microsoft.SqlServer.Management.UI.VSIntegration.ObjectExplorer.NavigableItemBuilder.BuildDynamicItemWithQuery(IList`1 nodes, INodeInformation source, INavigableItem sourceItem, String urnQuery, Boolean registerBuilder, Boolean registerBuiltItems)
   at Microsoft.SqlServer.Management.UI.VSIntegration.ObjectExplorer.NavigableItemBuilder.BuildDynamicItem(IList`1 nodes, INodeInformation source, INavigableItem sourceItem, IFilterProvider filter)
   at Microsoft.SqlServer.Management.UI.VSIntegration.ObjectExplorer.NavigableItemBuilder.Build(IList`1 nodes, INodeInformation source, INavigableItem sourceItem, IFilterProvider filter)
   at Microsoft.SqlServer.Management.UI.VSIntegration.ObjectExplorer.NonContextFilterNavigableItemBuilder.Build(IList`1 targetList, INodeInformation source, INavigableItem sourceItem, IFilterProvider filter)
   at Microsoft.SqlServer.Management.UI.VSIntegration.ObjectExplorer.NavigableItem.RequestChildren(IGetChildrenRequest request)
   at Microsoft.SqlServer.Management.UI.VSIntegration.ObjectExplorer.ExplorerHierarchyNode.BuildChildren(WaitHandle quitEvent)

Answer 1

Hello,
Since you installed in that order, I would try to update the SQL Server 2012 instance to the latest service pack. I would update all the instances to the latest service pack too.
http://www.microsoft.com/en-us/download/details.aspx?id=43340
Hope this helps.
Regards,
Alberto Morillo
SQLCoffee.com