When upgrading from one Vista edition to another Vista edition, the functionality in KB 971644 – “Platform Update for Windows Vista” may be lost. This scenario occurs when the original Vista edition had KB 971644 installed.

When attempting to upgrade from Windows Vista or Windows 7 to Windows 7 the upgrade attempt may fail and display this message:

The upgrade was not successful.
Your previous version of windows is being restored.
Do not restart your computer during this time.

However, when the system restarts it does not roll back to the previous version of Windows, continues with the upgrade and fails with the same message again. This occurs repeatedly and the process is stuck in a loop.

When attempting to upgrade from Windows Vista or Windows 7 to Windows 7 the upgrade attempt may fail and display this message:

“The upgrade was not successful.

Your previous version of windows is being restored.

Do not restart your computer during this time.”

However, when the system restarts it does not roll back to the previous version of Windows, continues with the upgrade and fails with the same message again. This occurs repeatedly and the process is stuck in a loop.

When trying to upgrade from Vista to Windows 7, upgrade process fails with error message and rolls back to Vista.

\$windows.~bt\windows\system32\drivers\iastor.sys
Status: 0xc0000359
Windows failed to load because a critical system driver is missing or corrupt

Consider the following scenario:

You have a printer driver installed on the system. You attempt to install a newer version of the driver. Both the new driver and the old driver have the same name (i.e. “ABC Model 1000″). After you install the driver, the old driver’s files may still be used when printing, or the driver may no longer function correctly because registry entries for the driver are inconsistent.

When you try to start a Windows Vista or Windows Server 2008-based computer after installing a Windows Service Pack and subsequently uninstalling NetGear Storage Central or Zetera Z-SAN software, you receive the following stop error message:

STOP: 0×0000007B ( parameter1 , parameter2 , parameter3 , parameter4 )
INACCESSIBLE_BOOT_DEVICE

During the upgrade from Windows Vista to Windows 7, the upgrade hangs at 62% indefinitely.

Note: this issue is only for hangs at the 62%.

After you upgrade from Windows Vista Service Pack 1 (SP1) to Windows Vista SP2 or from Windows Server 2008 to Windows Server 2008 SP2, your computer crashes frequently and you receive the following stop error message:

Stop 0×000000FE (parameter1, parameter2, parameter3, parameter4)
BUGCODE_USB_DRIVER

This problem usually occurs on computers that have NVIDIA chipsets. Additionally, this problem may occur when you perform very basic operations, such as plugging in a USB keyboard.

When attempting to upgrade from Windows Vista to Windows 7 the upgrade attempt may fail with the message “This version of Windows could not be installed, Your previous version of Windows has been restored, and you can continue to use it.” However, the next reboot of the machine will launch the upgrade process again only to fail with the same message.

When you upgrade from Windows XP to Vista with the Application Virtualization client installed you may see the following report:

Compatibility Report

Potential issues were detected with installed applications/devices

These issues do not prevent your upgrade, but some applications and/or devices might not work once your upgrade completes.

* Microsoft Application Virtualization