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Symptoms When installing or updating iTunes for Windows on a 64-bit Windows Vista or Windows 7 system, you may see a "The Windows Installer Service could not be accessed" message, as per the following screensh...view more "The Windows Installer Service could not be accessed" error messages when installing iTunes for Windows on 64-bit systems
in iTunes for Windows
BackSymptoms While upgrading or uninstalling a Windows software application (such as iTunes for Windows or QuickTime for Windows), you may receive one of the following error messages: file name is not a val...view more