[b:2lrt0rfl]Problem:[/b:2lrt0rfl]
I am trying to install the 2007 PeachTree Pro on our network. Everything went fairly smoothly…installed server components, installed PT on each workstation seemed to run fine. The problem I have is when I try to open our company (or a sample company) I get the following message:
“You cannot open this company because someone has a company open that does not have users set-up. Two companies cannot be open at the same time if neither has users set-up. You can try to login later or set-up users in at least one of the companies.”

I get this message even when all other computers other than one workstation & the server are shut-down.

[b:2lrt0rfl]Solution:[/b:2lrt0rfl]
Assuming that you are using Windows 2000 or Windows XP, check for the installation of Microsoft Internet Explorer 7.0 or IE 7. If present, go to the Windows Control Panel, and Add/Remove Programs and Uninstall IE 7. Windows will re-install IE 6.0. Following which, you will need to uninstall Peachtree and then re-install the program again.