https://secure-appldnld.apple.com/itunes12/091-87826-20180912-69157570-72F5-11E8-B6B0-01F09871E5B6/iTunes64Setup.exe
If you cannot get the iTunes 12.6.5 download to work, here are alternatives:
However, none of these offer the seamless, native integration that iTunes 12.6.5 provides with your existing music library and backup system. itunes 12.6.5 download
If you have an iPad 2, iPhone 4s, or iPod Touch running iOS 9 or 10, the App Store on the device may be broken or painfully slow. With iTunes 12.6.5, you can download old versions of apps on your PC, then sync them to the legacy device. https://secure-appldnld
Apple retains a hidden support page for enterprise users. You are looking for the file usually labeled "iTunes 12.6.5 for macOS." If you cannot get the iTunes 12
Apple provided 12.6.5 only to business/education customers via a hidden support page, which was taken offline around late 2019.