GFLAGS Overview

GFlags Overview

GFlags (gflags.exe), the Global Flags Editor, enables and disables advanced internal system diagnostic and troubleshooting features. You can run GFlags from a Command Prompt window or use its graphical user interface dialog box.

Use GFlags to activate the following features:

Registry

Set system-wide debugging features for all processes running on the computer. These settings are stored in the GlobalFlag registry entry (HKEY_LOCAL_MACHINE\ SYSTEM\ CurrentControlSet\ Control\ Session Manager\ GlobalFlag). They take effect when you restart Windows and remain effective until you change them and restart again.

Kernel flag settings

Set debugging features for this session. These settings are effective immediately, but are lost when Windows shuts down. The settings affect all processes started after this command completes.

Image file settings

Set debugging features for a particular program. These settings are stored in a GlobalFlag registry entry for each program (HKEY_LOCAL_MACHINE\ SOFTWARE\ Microsoft\ Windows NT\ CurrentVersion\ Image File Execution Options\ ImageFileName\ GlobalFlag). They take effect when you restart the program and remain effective until you change them.

Reference and Further information : Microsoft MSDN Article