Somebody was nice to enough to respond to a call for help on Blogcastrepository regarding issues with Office Communicator installing on the latest build of Vista.
The "hack" requires disabling User Account Protection (UAP) which seems to be causing quite a ruckus in installing applications on Vista. I have pasted the meat of the solution below for convenience.
- Press WinKey (the flag key on your keyboard) + R and type secpol.msc. (Without the quotes).
- If asked to permit Microsoft Management Console to run, allow it.
- In the Local Security Settings window, in the left hand pane, navigate to Security Settings, Local Policies, Security Options.
- In the pane to the right, scroll all the way to the bottom.
Set the first two User Account Protection items to No Prompt, and Disabled on the remaining three items.
- Close the Microsoft Management Console (MMC), and if you are asked to save the settings for Console1, press No.
- Reboot or log off and log back in to enforce the new settings; or alternatively open an elevated Command Prompt and type gpupdate /force (without the quotes), and then press Enter.
We had to reboot the machine as the gpupdate /force did not work for us.