Hi @Ron Neisler,
Thanks for reaching out to us. We are very pleased to support you.
According to the information you provided and the research I have done, I may understand that you want to uninstall SharePoint Designer 2010 in a way other than the control panel. If there is anything wrong, please correct me.
If there are no problems, it is recommended you please try using Settings App to uninstall the SharePoint Designer 2010.
- Go to Settings > Apps > Installed apps.
- Find SharePoint Designer 2010 in the list.
- Click on it and select Uninstall.
In addition, based on your description, we understand that there is an issue with uninstalling SharePoint Designer 2010 in the Control Panel that is causing the unsuccessful uninstallation.
If so, you can also try the following method to fix the issue and uninstall SharePoint Designer 2010 again.
- Downloaded the SharePoint Designer 2010 installation file. Next, please execute this file and chose the Remove option.
If you still have problems with the uninstallation process, please let me know the error message. I will look further into the cause of the problem. Thank you in advance for your efforts.Moreover, if the issue can be fixed successfully, please click "Accept Answer" so that we can better archive the case and the other community members who are suffering the same issue can benefit from it.
Your kind contribution is much appreciated.