Oracle 12c R2+ with ORA-28040: No matching authentication protocol

Symptoms: 

When trying to connect to an Oracle Instance 12c Release 2 onwards via client connection the error is presented:
ORA-28040: No matching authentication protocol


Cause: 
This problem was encountered on database instances version 12.2+ and clients with version 11.2.0.1.
This error indicates a compatibility problem between the authentication protocol used on the client side and the server side.
The authentication protocol used on the server side depends on the SQLNET.ALLOWED_LOGON_VERSION_SERVER parameter in the sqlnet.ora file.


Solution:
You can follow one of the options below:

Option 1:
Upgrade to an Oracle client version that is compatible with the default value of the SQLNET.ALLOWED_LOGON_VERSION_SERVER parameter.

or

Option 2:
Stay in the current version of the client, but in this case you must:
On the server-side, edit the sqlnet.ora file and add the following directive:

SQLNET.ALLOWED_LOGON_VERSION_SERVER = 11

Once done restart the instance, the database no longer excludes the use of 10G password.
Reset the password of the accounts you are trying to connect from the 11.2.0.1 client, reusing the same password.

alter user XXX identified by Your_Pwd;

Validate the value of the field PASSWORD_VERSIONS has been modified for the accounts in question (change from "11G 12C" to "10G 11G 12C").

SQL> select username, password_versions from dba_users;

You can try to connect form the 11.2.0.1 client and it supposed to work.