I'm having problems running some installations on my Windows XP SP2. I get the following error message:
Error 1500: Another installation is in progress. You must complete that installation before continuing this one.
I updated and ran avast antivirus and spybot. I googled and tried some of the solutions. None of them worked but I noticed in the Task Manager that two copies of msiexec.exe are running continuously, and start up again as soon as I end them.
Can someone please help,