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Yesterday, I was upgrading from Windows Vista to Windows 7 on my Sony Vaio Laptop. The installation of Windows 7 suddenly stopped. I first thought that, it will start. But, after sometime i was sure that Windows 7 Installation Hanged. Windows 7 Installation stopped and Hanged at 62%.

I then restarted the Laptop. But, again Windows 7 Installation failed and hanged at 62%. It was strange.

I then tried to find the solution on the Internet via Google God. I was happy to find a solution. I would like to share the solution with my readers on this blog.

If you look into setupact.log, you should be seeing the following error message which is repeated every 15 minutes is logged:

Warning [0x080b50] MIG AsyncCallback_ApplyStatus: Progress appears to be stuck. Current progress: 62

It turns out that the cause of the problem is because of iphlpsvc service. iphlpsvc service hangs during the upgrade.

Solution to Windows 7 Installation stopping and hanging at 62% – Upgrade from Vista

If you find similar problem where your Windows 7 installation hungs at 62%, Try the following to remove that error and successfully upgrade to Windows 7 from Vista

• Reboot the computer and the setup will automatically rollback the system to Windows Vista.
• Click Start, and right-click Computer.
• Click Properties, and then click Advanced System Settings.
• Click Environment Variables.
• Under System Variables, click New, and then press ENTER.
• Type in the following variable information:

  Variable Name: MIG_UPGRADE_IGNORE_PLUGINS
  Variable value: IphlpsvcMigPlugin.dll

• Restart Windows 7 Setup.

I found the solution to Windows 7 Installatiion hanging at 62% from this link which it at Microsoft Support Site

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For Further Reading:

1. Windows 7 Running on iPod Touch 3G / 4G
2. Enable Windows 8 Aero Auto-Colourization [How-To]
3. Windows 7 SP1 RTM Final Download Available for MSDN and TechNet Subscribers
4. Microsoft Windows 7 SP1 to be Launched on Feb 22
5. Download Internet Explorer 9 RC
6. “Programming Windows Phone 7″ e-Book Free Download
7. Download Links of Windows 7 SP1 Release Candidate
8. List of Windows 7 and Windows Vista Default Product Keys