[Burned Phoenix]

Microsoft issued a "Fix it" patch on Tuesday for a Windows 7 upgrade problem that results in a system hang.

The problem, for Vista users upgrading to Windows 7, is that the installer program never completes the upgrade. Instead, some users get a system hang after 62 percent of the upgrade has been completed.

Microsoft is pointing to a Windows Vista plug-in, "IphlpsvcMigPlugin.ddd," as the culprit.

Download: Fix it for this problem.

To resolve this problem yourself manually, follow these steps:

• Restart the computer. Then, your computer will roll back to Windows Vista.
  
• Click Start, right-click Computer, and then click Properties.
  
• On the Advanced tab, click Environment Variables.
  
• Under System variables, click New.
  
• Type MIG_UPGRADE_IGNORE_PLUGINS in the Variable name field.
  
• Type IphlpsvcMigPlugin.dll in the Variable value field.
  
• Click OK three times to close the dialog boxes.
  
• Start the upgrade installation again.

KB975253