"Dick Reuben" <dickre@comcast.net> wrote in message
news:n4o924d0bp1fuvb6as3fblhnlqjroect5e@4ax.com...
> Hs anyone run into this one?
>
> Whenever I try to install a program, I get about 2/3 of the way thru
> the installation, and then it stops and I get a message box that says:
> "Error 1500; Another installation is in progress. You must complete
> that installaation before continuing this one."
>
> I've looked at everything in my Startup folder, run AV software, and
> I've tried installing immediately after bootup, I'e also reinstalled
> Windows Installer.
>
> Windows Task Mgr. says that nothing else is running.
>
> Any thoughts?

If it's still saying that after a restart, start up Task Manager (Shift +
Ctrl + Esc), go to the Processes tab and click on the header of the first
column, Image Name, to sort it
alphabetically.
Look for a process called "msiexec.exe". Click on it once to select it, then
click on End Process at the bottom right.
Confirm in the pop-up that you *do* want to terminate the process.
Then try installing again.