You're missing "PerfOptions" in the registry path, go into Regedit and delete the old reg file, then use this code.

Windows Registry Editor Version 5.00
...

I don't think UI hasn't been updated for a very long time and I've did find another alternative task manager which does a much better job but it's a 30-day free trial version and the freeware...

Here is another method that nobody has tried yet and doesn't require a cmd prompt or creating a shortcut file.

1. Open a new Text Document and copy/paste this registry command.

Windows...

I'm answering this old reply for anyone who needs to know how to permanently set affinity without a shortcut file.
Download System Explorer from this link www.raymond.cc/blog and go to settings,...

Thank you so much it works great, you're awesome! :cool: