This iTunes install error is not strange to some users who came across the same iTunes 12.8/12.7/12.5/12.3 installation error on Windows 10. Contact your support personnel or package vendor.' A program run as part of the setup did not finish as expected. If iTunes won't download or install on your Windows, you may receive one of the following error messages: There is a problem with this Windows Installer package. Problem 1: Windows Installer Package Error Here we list the common iTunes installation errors and also the corresponding workarounds. It seems as though some users have issue installing or updating iTunes on Windows 10/8/7. 6.4 This Device Isn't Eligible For The Requested Build.