This problem occurs because the Iphlpsvc service stops responding during the upgrade.
Note Other services may also cause a problem in which the upgrade process stops responding at 62%.

To resolve this problem, follow these steps:

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

What I don't understand is why Microsoft does not fix this during its dynamic update feature that Windows setup has. It can download latest information and changes from the Internet before the upgrade starts. I assume the update mechanism has the ability to set the environment variable for the user. This would be a great help resulting in flawless upgrade. Now a non tech user has to go through these tough settings and that is if that user found this “solution”at all.

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