I read about MSIFASTINSTALL with great hope that it would reduce installation times as documented in Alex Verboon’s article. Sadly this hasn’t been my experience. I decided I’d test a sequence of installations including Flash Player, Access Runtimes, Reader, QuickTime, Java 6, Silverlight and Shockwave on Windows 7 RC. There were also some other non msi installations.

My average time for 2 runs without MSIFASTINSTALL was 7 min 29 secs, 3 runs with MSIFASTINSTALL=7 was 8 min 3 secs and 2 runs with MSIFASTINSTALL=1 was 7 min 47 seconds. I would have loved to have seen this speed up a few installs, but sorry to say – not for me!

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