Problem Fix - Upgrade From Windows Vista to Windows 7 Hangs at 62%

We will continue the System Recovery series with a few articles which describe some of the most common problems encountered by Windows 7 users and possible solutions for them. We will start with one of the most frequent problems reported by users upgrading from Windows Vista to Windows 7: the Windows 7 installation upgrade from Windows Vista hangs at exactly 62%. This article will share the cause for this problem and how to fix it.

Root Cause for This Problem

This problem was reported by 9% of installers. During the upgrade from Windows Vista to Windows 7, the process gets to 62% and then just freezes. When you meet such a problem, you cannot do anything to fix it quickly. Just restart your computer and it should roll back to Windows Vista.
Once this is done, open the file 'C:\WINDOWS \Sources\Panther\setupact.log', to view what happened.
NOTE: The 'C:' letter represents the drive where the operating system is installed. It can be different on your computer.
If you examine the contents of the file, you can see the error message as:
'Warning [0x080b50] MIG AsyncCallback_ApplyStatus: Progress appears to be stuck. Current progress: 62'.
Microsoft says this is usually created because the Iphlpsvc service has stopped responding. This service offers automatic IPv6 (Internet Protocol version 6) connectivity over an IPv4 (Internet Protocol version 4) network.
Next, check out the solutions found for solving this issue.
NOTE:For more information about this problem check the following article Upgrade stops responding (hangs) at 62% when you upgrade to Windows 7.

Automated Fix

Microsoft offers a tool which allows you to automatically fix this problem. It is called Microsoft Fix It. Download it and run the utility on Windows Vista.
NOTE: In order to run this tool you need to have administrative permissions.
In the first window check the 'I Agree' box and then press the Next button.

Now the repair process will begin and a progress bar will be displayed.

When the problem is fixed, you will see a window similar to the one from the capture below. Click on the Close button to finish the wizard.

Now, all you have to do is to restart the upgrade process.

Manual Fix

NOTE: In order to complete a manual repair you need to have administrative permissions.
To solve this problem yourself, restart your computer, right-click on My Computer and then click on Properties.

Open 'Advanced system settings'.

In the System Properties window, go to the Advanced tab and press the Environment Variables button.

Now you have to create a new entry under System variables. Just click on the New button.

Type MIG_UPGRADE_IGNORE_PLUGINS in the Variable name field and IphlpsvcMigPlugin.dll in the Variable value field. When you are done press OK.

You will observe that a new entry was created in System variables.

Click OK two times to close the dialog boxes. Now reboot and start the upgrade installation again.

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