title: Why the compiler is unable to load the library name dbexpint.dll?
body: <p>I'm a new user o Delphi 10.2 Tokyo (trial version) when I compile the program source code this error message appears:</p>
  
  <p><strong><em>Unable to load dbexpint.dll (ErrorCode 126). It may be missing from the system path.</em></strong> </p>
  
  <p>This code should access a Firebird database, I have Firebird Client 3.0 installed on my machine. inside the installation folder I have the DLLs:</p>
  
  <ul>
  <li>FBCLIENT.DLL</li>
  <li>MSVCP100.DLL</li>
  <li>MSVCR100.DLL</li>
  </ul>
  
  <p>Below is part of the source code.</p>
  
  <pre><code>unit uDataModule;
  
  interface
  
  uses
    SysUtils, Classes, DBXCommon, DB, DBClient, SimpleDS, SqlExpr, FMTBcd,
    ADODB, Data.DBXInterBase, Data.DBXOracle;
  
  ...
  
  procedure TDM.DataModuleCreate(Sender: TObject);
  var
    strPath: String;
  begin
    //Conex?o Firebird SPIRIDON
    SQLSpiridonConnection.Params.Clear;
    SQLSpiridonConnection.Params.Values['DatabaseServer'] := 'Interbase';
    SQLSpiridonConnection.Params.Values['Database']       := 'XXXXXXXXXX:f:\dados\database\XXXXXXXXXXXX.FDB';
    SQLSpiridonConnection.Params.Values['SQLDialect']     := '3';
    SQLSpiridonConnection.Params.Values['DriverName']     := 'Interbase';
    SQLSpiridonConnection.Params.Values['VendorLib']      := 'gds32.dll';
    SQLSpiridonConnection.Params.Values['User_Name']      := 'XXXXXXXX';
    SQLSpiridonConnection.Params.Values['Password']       := 'XXXXXXXX';
    SQLSpiridonConnection.Params.Values['LibraryName']    := 'dbexpint.dll';
    SQLSpiridonConnection.Params.Values['GetDriverFunc']  := 
   'getSQLDriverINTERBASE';
    SQLSpiridonConnection.Connected:= True;
  </code></pre>
  
  <ul>
  <li><p>I tried to download the DLL and put it in the system32 and wow64 folders, but it was not effective.</p></li>
  <li><p>I tried changing the reference from the Library name line to dbxint.dll, but the following error appears:</p></li>
  </ul>
  
  <p><em>DBX Error: Driver could not be properly initialized. Client library may be missing, not installed properly, of the wrong version, or the driver may be missing from the system path.</em></p>
  
  <p>I don't know what's wrong and how I can solve it. Please, can you guys help me?</p>