Fix: Vista to Windows 7 Upgrade hangs at 62%

[HappyAndyK]

Upgrade stops responding (hangs) at 62% when you upgrade to Windows 7

When you try to upgrade your computer from Windows Vista to Windows 7, the upgrade process stops responding at 62% indefinitely.

This problem occurs because the Iphlpsvc service stops responding during the upgrade.

To resolve this problem, 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.

[HappyAndyK]

There is also now a FixIt solution available from Microsoft: Microsoft Fix it BLOG : Upgrade hangs at 62% when you upgrade to Windows 7 from Windows Vista

Note: Do not use this Fix It if the upgrade stops responding at a percentage other than 62%.

[leofelix]

http://go.microsoft.com/?linkid=9693817

direct download link thanks to Corrine MVP

Fix it Solution for Windows 7 Upgrade Hanging at 62% ~ Security Garden

[seti]

Both of you beat me to this

[nitinagarwal1988]

It's also good to stop services of your antivirus or security suites before you start upgrading you system.