Thank your for the reply, Isham.  I followed your instruction to repair or install the Intuit Entitlement Client.  It ran but did not have an option to repair or remove.  After running the entitlement client setup wizard, the only way I could try to open ProSeries was to double-click on the protax24.exe application file under the 32bit folder. The execution of this file went as far as asking for my customer number and zip code and confirmation of contact information, but ultimately resulted in receiving the message that there is an error in UpdateZilla, missing C:\ProWin24\31bit\Updater\ProPrd24.INI and a message that ProSeries is unable to access or locate the 'Common' files folder.  Are you able to send me the ProPrd24.INI file that I can save under the 32bit folder?