The Windows Installer team has unleashed the beta program for Windows Installer 4.5 on Microsoft Connect. Anyone interested can sign up, provided they have a Windows Live ID tied to Microsoft Connect - there is no survey to fill out. “Windows Installer 4.5 will provide targeted features for multi-package products and advanced servicing. Windows Installer 4.5 will be delivered down level to Windows XP SP2 and above. This down level update will include the operating system independent features and fixes from the Windows Vista only release, Windows Installer 4.0.” There is supposed to be a draft paper entitled “Agility Trends in Package Software” which discusses the problems the team is targeting with the Windows Installer 4.5 release but at the time of posting the link seems to be dead.
Link: Program Details & Application Link
View: Agility Trends in Package Software
News source: Windows Installer Blog
















One of the problems with Windows was always the fact that stuff is left behind after you uninstall something. Or when installing something, things are tossed left and right. I hope this version, and future versions make it more clean and organized. That would get rid of one of the problems with keeping systems performence and stability high.
If you're a developer targetting both XP and Vista, you simply can't package your software using the "Vista-only" installer, so you're going to use the older one.
OTOH by back-porting the newer installer to XP, developers can slowly migrate to it and rest assured that not only will they not alienate their existing user base, but also if/when their users eventually migrate to Vista, the transition will go smoothly.
"Windows Installer 4.5 will be delivered down level to Windows XP SP2 and above"
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