In Windows® XP, open the Windows Control Panel and double-click Add or Remove Programs.To do the repair, you must uninstall Photoshop CS4 and then reinstall it.īefore you uninstall, close all applications currently running on your system (including other Adobe applications, Microsoft Office applications, and browser windows).
If you install Photoshop CS5.1 on your system and then install Photoshop CS4 afterward, you will not in the future be able to use the Photoshop CS4 installer to repair your Photoshop CS4 installation.However, we do not officially support the 64-bit edition and you may run into problems. If you are running Microsoft® Windows® XP with Service Pack 3, Photoshop will run in both 32-bit and 64-bit editions.
Note: In order to install additional components or reinstall your software after your original installation, you will need access to the original installer (CD, DVD or the download from the web).
Mac OS X v10.5.7 minimum is required Mac OS v10.6.2 is recommended 32-bit and 64-bit systems (You may need to run 32-bit in order to run 32-bit only plug-ins.).