Hi Jahidshahed,
· Why are you trying to install windows installer 3.1?
· What windows operating system is installed on your computer?
Windows installer 3.5 is preinstalled in Windows vista and windows installer 4.5 is preinstalled on windows 7. Please let us know what you are trying to accomplish.
Bindu R - Microsoft Support.
Visit our Microsoft Answers Feedback Forumand let us know what you think.