Outlook 2003 appear outlvba.dll error in Windows XP
OUTLVBA.DLL is part of MS Office 2000 and can be found in C:\Program Files\Microsoft Office\Office\Addins\. Maybe check the versions of this file between a working system and the problem system. What’s more you can fix this error by registry key, do the following steps:
Step 1: Click Start menu, and run “redegit”
Step 2: Go to the Windows Registry. (Click on the Windows logo key on your keyboard and the “R” key at the same time then type in regedit.) In the Registry go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Outlook\Addins.
Step 3: Click on the string in the right window and under value data delete the value.
Tips: Before editing the registry key, you should back up your registry before making any changes.
After you finish all the above mentioned steps, you have fix the error outlvba.dll or Outlook 2003 by editing registry key.