CUH application is not respoding

... then, like the OP, use EtreCheck to try to locate those "hidden" Corel files on your Mac.

Alternately, you can use the following command in the Terminal app: kextfind

This command will locate all kernel extensions on your Mac. However, in addition to these, Corel may have embedded itself in either or both the Launch Daemons and Launch Agents directories. These latter agents will have a .plist filename extension.

• User Launch Daemons would be located at: Macintosh HD/Users/<username>/Library/LaunchDaemons
• User Launch Agents would be located at: Macintosh HD/Users/<username>/Library/LaunchAgents

Finally, look in the User Login Items, located at:

• Macintosh HD/Users/<username>/Library/Preferences/com.apple.loginitems.plist

I am having this issue as well. Corel was too difficult to use so I uninstalled it. There isn't an uninstaller. I have checked. The only way to delete Corel is by deleting it, throwing it away. However, I am still getting Corel trying to access my Mac and slowing down my Mac and causing beach balls. It's infuriating that Corel would make such malicious software that cannot be removed. I am livid.

Sorry, but what does "CUH" mean?

I think I got everything with a file check app that was shared with me in another thread. I have not had the CUH issue since using that file app.

faaz97 wrote:

CUH mean is Corel Update Helper. Yesterday i downloded corel draw, and I immediately uninstalled it. after that it appears that (CUH is not responding)

And why does CUH still appear? Even though I have uninstalled Corel

Did you uninstall Corel Draw using their uninstaller (if available) or by just dragging the app to the Trash? Regardless, it didn't completely remove its associated components. One way to determine what & where they are would be to run an EtreCheck report. EtreCheck is a diagnostics tool that can help identify these components and their locations.

Ref: Using EtreCheck to Troubleshoot Potential Mac Issues - Tesserax ASC