solidDB Help : Configuring and administering : Security : Authentication : Operating-system-based external authentication : Troubleshooting external authentication : External authentication fails with Error 08004: Server rejected the connection
  
External authentication fails with Error 08004: Server rejected the connection
Symptom
The client connection for an externally-authenticated user fails with Error 08004: Server rejected the connection.
Causes
The user name or password you entered was incorrect.
To use external authentication, the use of OpenSSL must be enabled on both the server and client computer. If the use of OpenSSL is not enabled on the server side, solidDB server rejects the connections from externally-authenticated users.
Recovery
1 Check that OpenSSL is installed on the server computer.
2 Check that server-side solid.ini file contains the following parameter settings:
[General]
UseCryptoLib=yes
CryptoLibPath=<valid_path_to_OpenSSL_library>
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Troubleshooting external authentication