Fix: You cannot install the 64-bit version of Office 2010 because you have 32-bit Office products installed
According to Microsoft, you cannot install native 64-bit Office 2010 on computers that have 32-bit Office applications and third-party add-ins installed. You must uninstall the 32-bit Office applications and add-ins before you can install 64-bit Office 2010.
If you have 32-bit third-party Office applications and add-ins that are required for users, you can install the default option, which is 32-bit Office 2010 (WOW64 installation) on computers that run supported 64-bit editions of Windows.
A list of applications that block and those that do not block a 64-bit Office 2010 is included. See Blocking and nonblocking Office applications in 64-bit installations.
If you try to do it, a screen like this with a list of blocking applications can arise:
But, what happens if the screen doesn’t contain any application?
It probably means that a 32-bit component is already installed or has not been successfully uninstalled from your system. Also, you are unable to uninstall it because it is not appearing correctly under Programs and Features in Control Panel.
At this point, the Windows Installer Cleanup utility can make your day. It is available for download here.
After installation, follow these steps:
- Click on Start button, All Programs and click on Windows Install Clean Up.
- Select the blocking 32-bit application from the list and click Remove.
Finally install Microsoft Office 2010 64-bit again and enjoy the experience.