GFlags
GFlags, the Global Flags Editor, enables and disables advanced debugging, diagnostic, and troubleshooting features. It's most often used to turn on indicators that other tools track, count, and log.
Where to get GFlags
GFlags.exe is included in the Debugging Tools for Windows 10 (WinDbg).
After the debugging tools are installed, the 64-bit version of gflags.exe is installed by default in the following directory.
C:\Program Files (x86)\Windows Kits\10\Debuggers\x64
If you're running a 32-bit version of Windows, use the 32-bit version of gflags.exe located here:
C:\Program Files (x86)\Windows Kits\10\Debuggers\x86
Overview of GFlags
Driver developers and testers often use GFlags to turn on debugging, logging, and test features either directly, or by including GFlags commands in a test script. The page heap verification features can help you to identify memory leaks and buffer errors in kernel-mode drivers.
GFlags has both a dialog box and a command-line interface. Most features are available from both interfaces, but some features are accessible from only one of the interfaces. For more information, see GFlags details.
Features
Page heap verification. GFlags includes the functions of
PageHeap(pageheap.exe), a tool that enables heap allocation monitoring.No reboot is required for the Special Pool feature. You can enable, disable, and configure the Special Pool feature without restarting ("rebooting") the computer. For more information, see Special Pool.
Object Reference Tracing. A flag enables tracing of object referencing and object dereferencing in the kernel. This feature detects when an object reference count is decremented too many times or not decremented even though an object is no longer used.
The GFlags dialog box has tabbed pages for easy navigation.
Requirements
To use most GFlags features, including setting flags in the registry or in kernel mode, or enabling page heap verification, you must be a member of the Administrator's group on the computer.
This section includes:
Note
Incorrect use of this tool can degrade system performance or prevent Windows from starting, requiring you to reinstall Windows.
Important
Pool tagging is permanently enabled on Windows. The Enable pool tagging check box on the Global Flags dialog box is dimmed, and commands to enable or disable pool tagging fail.