iTunes 12.7.2.60 x64 failing to install or update in Windows 10 Pro

I found a sneaky fix to my own problem, but I am not sure whether this will help fixperise with his original issue.

When the error message was displayed in the installer, I left it displayed, then navigated to my own TEMP folder, where the IXP795.TMP folder was located. In that folder, I found MSI files for the 64 bit applications support, the 64 bit device support, the Apple update application, an executable to install Bonjour and an MSI for 64 bit iTunes. I double-clicked each of these (allowing one to complete before trying the next) in turn. At the end of this sequence, iTunes offered to launch, and everything appears to be properly working.

I then returned to the original installer (still displaying the error message) and clicked "Close", and the IXP795.TMP folder and all its content was removed.

I hope this helps some people, although I doubt it will help fixpertise.

For general advice see Troubleshooting issues with iTunes for Windows updates.

The steps in the second box are a guide to removing everything related to iTunes and then rebuilding it which is often a good starting point unless the symptoms indicate a more specific approach. When reinstalling right click on the downloaded setup file and use run as administrator. It may also help to temporarily disable any non-Microsoft anti-virus. The notes below the box should include details of how to shut down services that prevent uninstalling.

Review the other boxes and the list of support documents further down the page in case one of them applies.

The further information area has direct links to the current and recent builds in case you have problems downloading, or want to revert to an older version if the current one won't work properly for you at the moment.

Your library and device backups should be unaffected by these steps but there are links to backup and recovery advice should it be needed.

tt2

I have an exceptionally similar issue, but with a clean install on a new computer.

When I attempt to install iTunes 12.7.2.60 x64, the install proceeds normally until just after it asks for elevated user. Then, it states that it is "Processing additional packages", then switches to a screen stating "Errors occurred during the installation before iTunes could be configured." It suggest simply trying to run the installer again. Even with multiple restarts, clean-ups of the TEMP folder, checks for disk issues, etc., the same issue is reported.

However, I have a log file that give some information.

The lines of interest appear to be the following:

Executing: "C:\WINDOWS\system32\msiexec.exe" /i "C:\Users\Sound\AppData\Local\Temp\IXP795.TMP\iTunes64.msi" INSTALL_SUPPORT_PACKAGES=1

Returning: 1603

Any experts who can suggest what this may be?

Many thanks ! this solution fix my problem instantly ! 🙂