Thank you for your reply Sean Zhu.
I want to do it through command line.
I did in the following way:
I have taken the ownership of the folder using Takeown.exe command, and then I run Icacals.exe command to deny the permission of the regedit32.exe.
It worked. But I am not sure whether I Can use this.
I tried this just few minutes before, but I dont know whether it is right or wrong.
Please give your guidance.
Thanks in Advance,
Regards,
Asha