SetProcessPriorityBoost function

Disables or enables the ability of the system to temporarily boost the priority of the threads of the specified process.


BOOL SetProcessPriorityBoost(
  HANDLE hProcess,
  BOOL   bDisablePriorityBoost



A handle to the process. This handle must have the PROCESS_SET_INFORMATION access right. For more information, see Process Security and Access Rights.


If this parameter is TRUE, dynamic boosting is disabled. If the parameter is FALSE, dynamic boosting is enabled.

Return Value

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.


When a thread is running in one of the dynamic priority classes, the system temporarily boosts the thread's priority when it is taken out of a wait state. If SetProcessPriorityBoost is called with the DisablePriorityBoost parameter set to TRUE, its threads' priorities are not boosted. This setting affects all existing threads and any threads subsequently created by the process. To restore normal behavior, call SetProcessPriorityBoost with DisablePriorityBoost set to FALSE.


Minimum supported client Windows XP [desktop apps | UWP apps]
Minimum supported server Windows Server 2003 [desktop apps | UWP apps]
Target Platform Windows
Header processthreadsapi.h (include Windows.h)
Library Kernel32.lib
DLL Kernel32.dll

See Also


Priority Boosts

Process and Thread Functions


Scheduling Priorities