I'm having the signature validation failed when trying to run Intel XTU. i've tried uninstalling and deleting the entire XTU directory in Program Files. I've tried 18.104.22.1680 version available on the website.
How can I get XTU running?
Just read the XTU download page.
And, it says on your picture that "This platform does not support overclocking".
Do not worry, however. You will be back when problems occur, and there is no support.
Also, read the forum banner:
Find and share solutions with Intel users across the world
This is a community forum where members can ask and answer questions about Intel products.