Microsoft Office Product Activation Errors.

• 1). Make sure the date and time settings are correctly set.
  
  
• 2). Check that your Microsoft program is not a trial version. Trial versions will run in reduced-functionality mode after the trial period expires.
  
  
• 3). Check the Internet connection. Program communication errors can be caused by a firewall or a proxy server that requires authentication.
  
  
• 4). Make sure that you do not have more than one installation of the same Office product (e.g. Office 2003 retail version and Office 2003 Trial version or an individual Office program like Microsoft Office Word 2003 and a full Office 2003 edition). Multiple installations will result in an "invalid product key" error message.
  
  
• 5). Delete the license file after a failed re-installation. In Windows XP, this is done by clicking on Start>Run>type %AllUsersprofile%\Application Data\Microsoft\Office\Data, click on OK. Then locate and delete the Opa12.dat file and re-install the Office product.
  
  

Errors during an Office Product Installation

• 1). Disable third-party applications like WebRoot Spysweeper that restrict access to registry subkey modification.
  
  
• 2). Retry the installation and after a computer restart, then re-enable the application.
  
  
• 3). Delete the license file after a failed re-installation. In Windows XP this is done by clicking on Start>Run>type %AllUsersprofile%\Application Data\Microsoft\Office\Data, click on OK. Then locate and delete the Opa11.dat file and re-install the Office product.
  
  

Errors starting Microsoft Outlook

• 1). Locate 'Outlook.exe' in the Microsoft Office 10,11 or 12 in the path:
  C:\Program Files\Microsoft Office\Office(10,11,12).
  
  
• 2). Right click Outlook.exe and go to "Properties."
  
  
• 3). Click "Run this program in compatibility mode" on the "Compatibility" tab.
  
  
• 4). Click on "OK" and start Outlook.
  
  

"Add or Remove Programs" Feature Fails to uninstall

• 1). Verify that the "Add or Remove Programs" feature does not work by clicking on Start>Run> type "appwiz.cpl".
  
  
• 2). Select the Office system product and click on "Remove."
  
  
• 3). If the above does not work, download "MicrosoftFixIt50154.msi" from the Microsoft website and run it.
  
  
• 4). Follow the steps in the "Fix It" wizard.