For those of you who land here searching for a solution to problems loading Turbo Tax 2007 on a computer running Vista here’s how I did it.
I restarted Windows in Safe Mode and then installed Turbo Tax. I had also disabled Windows Defender and Firewall prior to the restart. Turbo Tax installed smoothly and then I restarted Windows normally and enabled Defender and Firewall. I did my taxes this morning and all went well.
I’m disappointed that neither Turbo Tax nor Microsoft had this simple solution on their sites — it would have saved me a bunch of frustration.
Good Luck to you — if it works for you, come back and let me know.