"Authentication with credentials provided" Error

Sure thing so here is the inital error receive:

DataSource.Error: Microsoft SQL: A connection was successfully established with the server, but then an error occurred during the login process. (provider: SSL Provider, error: 0 - The certificate chain was issued by an authority that is not trusted.)
Details:
DataSourceKind=SQL
DataSourcePath=cotti-sql\qs2sql;OnBase
Message=A connection was successfully established with the server, but then an error occurred during the login process. (provider: SSL Provider, error: 0 - The certificate chain was issued by an authority that is not trusted.)
ErrorCode=-2146232060
Number=-2146893019
Class=20


Then when I go to Data Source settings >Select the OnBase data source (since the error says it is about that data source) > Edit Permissions > Edit under Credentials > Toggle to the Database option > Enter login information

The information works, I go back to the Select data source screen, I close then that is when I receive the second error:

We couldn't authenticate with the credentials provided. Please try again.

So I select Edit Credentials and I receive a screen that says my credentials cant be authenticated. 

I am able to log into SSMS so Im confused why I am receiving an error.