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The 64-bit versions of Vista require that all new Kernel-Mode device drivers be digitally signed, so that the creator of the driver can be identified. [77] [78] This is also on par with one of the primary goals of Vista to move code out of kernel-mode into user-mode drivers, with another example bing the new Windows Display Driver Model. [79]
Common device driver compatibility issues include: a 32-bit device driver is required for a 32-bit Windows operating system, and a 64-bit device driver is required for a 64-bit Windows operating system. 64-bit device drivers must be signed by Microsoft, because they run in kernel mode and have unrestricted access to the computer hardware. For ...
Windows Vista faces backward compatibility problems with many of the games and utility programs that work in Windows XP. As of August 2007, there were about 2,000 applications that specifically carried the 'Vista Compatibility Logo', [3] although the majority of applications without the logo will run without any problems. This number is low ...
In computing, Windows on Windows (commonly referred to as WOW) [1] [2] [3] is a discontinued compatibility layer of 32-bit versions of the Windows NT family of operating systems since 1993 with the release of Windows NT 3.1, which extends NTVDM to provide limited support for running legacy 16-bit programs written for Windows 3.x or earlier.
Previously, the WDK was known as the Driver Development Kit (DDK) [4] and supported Windows Driver Model (WDM) development. It got its current name when Microsoft released Windows Vista and added the following previously separated tools to the kit: Installable File System Kit (IFS Kit), Driver Test Manager (DTM), though DTM was later renamed and removed from WDK again.
Kernel-mode drivers on 64-bit versions of Windows Vista must be digitally signed; even administrators will not be able to install unsigned kernel-mode drivers. [20] A boot-time option is available to disable this check for a single session of Windows. 64-bit user-mode drivers are not required to be digitally signed.
Windows Vista uses Package Manager (Pkgmgr.exe) and Windows Update Standalone Installer (Wusa.exe) to install software updates and hotfixes. However, these do not support the various command-line switches like Windows XP's Package Installer (Update.exe) did. [84] Much of the functionality from Update.exe is missing.
For security reasons, 64-bit versions of Windows Vista allow only signed drivers to be installed in kernel mode. [1] [2] Because code executing in kernel mode enjoys wide privileges on the system, the signing requirement aims to ensure that only code with a known origin executes at this level.