Upgrading to WIN8 can cause some software to not run

The Windows 8 Developer Preview version has a number of problems with its use, which naturally includes compatibility. Microsoft has pointed out in KB article KB2622197 that testers who upgrade to the Windows 8 Developer Preview (build 8102) may find that the system is not compatible with some software.

Microsoft has previously said that the Windows 8 Developer Preview is temporarily unable to support USB 2.0 and USB 3.0 devices, and has provided several patches to fix the problems in the Windows 8 Developer Preview version. While Microsoft promises that Windows 8 will provide maximum compatibility support for existing software and hardware, the current system is not yet in beta, and development tasks are daunting.

Microsoft said: "If you upgrade from an existing Windows system to a Windows Developer preview, some applications may not be available after the system upgrade is complete." In addition, you will receive the following message in the Compatibility Report: they will work correctly after some operation. This information does not include additional guidance to help you resolve the problems that arise. ”

Although Microsoft recommends that the tester install a new installation of Windows 8, it does not prevent users from upgrading the installation on an existing system. "To solve this problem, you can reinstall an application that is not available after the upgrade process is complete." We recommend that you install the latest version, which will ensure that the software is better compatible with the Windows Developer Preview version. ”