You receive a "The product key supplied is invalid" error message when you try to install Microsoft Operations Manager 2005 Workgroup Edition

This problem occur when you want to install MOM 2005 Workgroup Edition UI Console in some PC.

Microsoft has solution for this, just go to this link

The Print Spooler service stops responding and Event ID 7031 is logged into Windows 2000 or in Windows Server 2003

There is new Knowledge Base and hotfix from Microsoft for print spooler problem in Windows 2000 and 2003. For more info, just go to KB890642