Download driver verifier

See Microsoft Knowledge Base article for information about what to consider before you enable Driver Verifier Manager on production servers. You can enable Driver Verifier by using Verifier.

You can also see Driver Verifier statistics in real time. For additional information, refer to the "Driver Verifier Manager" section of this article. Should Driver Verifier detect a violation, the standard behavior is to bugcheck the system as to provide the most information possible about debugging the issue. A system connected to a debugger will stop once a bugcheck has occurred. All Driver Verifier violations result in bug checks, the most common ones although not necessarily all of them are:.

This command will print out useful information and attempt to pinpoint the faulting driver. Debugger extensions that are specific to Driver Verifier:. Windows kernel-mode graphics drivers such as printer and display driver DLLs are restricted from calling the pool entry point directly.

Rather, pool allocations are performed indirectly using graphics device driver interface DDI callbacks to Win32k. For example, EngAllocMem is the callback that a graphics driver calls to explicitly allocate pool memory. To provide the same sort of automated testing for the graphics drivers, support for some of the Driver Verifier functions is incorporated into Win32k.

However, because graphics drivers are more restricted than other kernel-mode drivers, they require only a subset of the Driver Verifier functionality. The other functionality, namely using special pool, random failure of pool allocations, and pool tracking, are supported to varying degrees in the different graphics DDI callbacks.

Random failures are supported for the following graphics DDI callback functions:. In addition, the use of special pool and pool tracking is supported for EngAllocMem. Enabling Driver Verifier for the graphics drivers is identical to the other drivers refer to the "Enabling Driver Verifier" section of this article for additional information.

Unsupported flags such as IRQL checking are ignored. In addition, you can use the! NOTE: You should only use the random allocation failure setting for robustness testing. Use of this setting may cause rendering error messages, so you should not use this setting with verification tests to check the correctness of the graphics driver's implementation for example, by comparing the graphics driver output to a reference image.

The Driver Verifier Manager tool Verifier. Start the Driver Verifier Manager by using verifier. Whenever switches are included, the command-line based version of the utility is used. For help with configuring Driver Verifier, run verifier. The Driver Status property page gives you an image of the current status of Driver Verifier. You can see what drivers the verifier detects. The status can be one of the following:. Unloaded: The driver is not currently loaded but it was loaded at least once since you restarted the computer.

Never Loaded: The driver was never loaded. This status can indicate that the driver's image file is corrupted or that you specified a driver name that is missing from the system. You can click the list header to sort the list by driver names or status.

In the upper-right area of the dialog box, you can view the current types of the verification that are in effect. The status of the drivers is updated automatically if you do not switch to manual refresh mode.

See the following:. Static Driver Verifier is integrated into Visual Studio. You can run static analysis on your Visual Studio driver project. Microsoft uses SDV to test the kernel-mode drivers that are included with the Microsoft Windows operating system and to test the sample drivers in the WDK.

For example, SDV can verify that the driver:. In Driver Verifier Manager , select Display information about the currently verified drivers , and then select Next. Continuing to select Next displays additional information.

To get the most benefit from Driver Verifier, you should use a kernel debugger and connect it to the test computer. If Driver Verifier detects a violation, it generates a bug check to stop the computer. This is to provide you with the most information possible for debugging the issue.

When you have a kernel debugger connected to a test computer that is running Driver Verifier, and Driver Verifier detects a violation, Windows breaks into the debugger and displays a brief description of the error.

All violations detected by Driver Verifier result in bug checks. Common bug check codes include the following:. When you start a new debugging session, use the debugger extension command,!

In kernel mode, the! In addition to! For example:. RuleID is always the first argument to the bug check. Driver updates for Windows 10, along with many devices, such as network adapters, monitors, printers, and video cards, are automatically downloaded and installed through Windows Update. You probably already have the most recent drivers, but if you'd like to manually update or reinstall a driver, here's how:.

If you can't see the desktop and instead see a blue, black, or blank screen, see Troubleshoot blue screen errors or Troubleshoot black or blank screen errors. Caution Download drivers and tools for various platforms. Running Driver Verifier could cause the computer to crash.

You should only run Driver Verifier on computers that you are using for testing and debugging. However, we recommend that you must test your client drivers with the USB 2. The Windows Hardware Certification Kit includes an automated test that runs the simulated test cases.

In order to use the USB client driver verifier, enable it on your target computer on which running Windows 8. The USB client driver verifier is automatically enabled when you enable the Driver Verifier for the client driver. Alternatively, you can enable the verifier by setting this registry entry. In that case, use the! Additionally and optionally, you can configure the USB client driver verifier to modify or fail specific routines and specify how often the routine must fail.

To configure the verifier, set the registry entries as shown here:. If you add, modify, or remove any setting, you must re-enumerate the device with the system to apply the setting. The settings apply to the client driver specified under the services key. One of the initialization tasks of a client driver is to register itself with the underlying driver stack.

The registration is required in several subsequent calls. The driver must not cause a system crash or become unresponsive by choosing to ignore this failure. This setting allows you to test the code that is executed when the client driver sends chained MDL requests to the device that is connected to a host controller that does not support them.

The call fails regardless of whether the host controller supports chained MDLs.