Hello i need help with setting up itself asm program as Critical how i can use
with NtSetInformationProcess ?

Thanks for help

What do you mean by "Critical"? Do you mean the process priority?

Yes process priority Highest

There are normal APIs for setting the priority. Try SetPriorityClass and use REALTIME_PRIORITY_CLASS.

The NT* APIs are not officially documented. It is not recommend to use them. AFICT you don't actually gain anything by using them anyway.

I wonder what is the valid usecase for increased priority of a process? Except making users angry.

Usecase is education in processes and WIN APIS in my another school exam. Protecting thanks for reply and help