Unable to connect only SQL Server Database (Microsoft SQL Server 2008 R2 (SP2) - 10.50.4000.0 (X64))
with this error message:
 
Unable to connect to data source "/shared/Projects/myWork/DataSources/TeamSpace_DEV" at
    "USCTAPD00366\DEV01:55707@WSS_Logging_PRD_WS2_FULL" with the supplied connection information.
    [datasrc-3961050]
Unable to connect to data source "/shared/Projects/myWork/DataSources/TeamSpace_DEV" at
    "jdbc:sqlserver://USCTAPD00366\DEV01:55707;databaseName=WSS_Logging_PRD_WS2_FULL;selectMethod=direct".
    Make sure the URL information, user name and password are correct.  [datasrc-3961025]
Cause: The driver could not establish a secure connection to SQL Server by using Secure Sockets
    Layer (SSL) encryption. Error: "Server key".
    ClientConnectionId:b3d25c06-e932-46f6-9784-bb4fbe6aba1c