cancel
Showing results for 
Search instead for 
Did you mean: 
Highlighted
Intuit

Error 1638: Another version of this product is already installed

When trying to install QuickBooks Desktop, you receive the following error:

Error 1638: Another version of this product is already installed...

To resolve this:
  1. On your keyboard, press Windows+R to open the Run command.
  2. Type Control Panel, then select OK.
  3. Select Programs and Features. If Control Panel is in Category View, select Uninstall a Program.
  4. In the list of programs, check if the QuickBooks version you are installing is present.
  5. If it is, open the program (from the Start menu, select All Programs > QuickBooks > choose the correct QuickBooks version).
  6. If you cannot open the program, repair QuickBooks.
  7. Try reinstalling using clean install if repairing doesn't work.
  8. If you were unable to uninstall the program, check the error message in the  Learn and Support site    for more detailed troubleshooting.
  9. Use Program Install and Uninstall troubleshooter to uninstall QuickBooks if the steps mentioned in the Learn and Support site does not resolve the issue.
  10. If the previous steps fail to uninstall QuickBooks, install the program on a different directory folder by browsing to a different location during installation.