To remove programs you need to be logged in as an Administrator and it's best to make sure that all other software is closed. but there should be no need to uninstall Malwarebytes for instance as that wont interfere with a McAfee removal.
Make sure all programs are shut down and attempt to uninstall again via Control Panel.
Follow the instructions here: How to uninstall or re-install supported McAfee products using the Consumer Products Removal tool
Thank you for your assistance. I appreciate it.
It seems your suggestions are essentially what I have already done, but for completeness I tried again in the following:
Here's what I did after your post (in this order:)
Restarted the computer
I am the administrator and have control of all functions.
I downloaded MCPR.exe.
I closed all programs.
I ran MCPR.exe > "Extracting Files. Please Wait."> then nothing. No hourglass. No action. Nil. Task Manager shows no program running.
I used Control Panel> Add/Remove Programs > McAfee Security Center > Change/Remove> Error Message: McAfee UI Host encountered a problem and needs to close. Send Error Report?"
Whether I send the error report or not, I can not get to the Uninstall step.
I still can not uninstall McAfee and I am most grateful for any suggestions.
Are you connected to the internet? The software needs to download files.
Thank you for your interest.
I am indeed connected to the Internet all the time.
OK thanks. I would contact Technical Support.
I will contact tech support.
I appreciate the time you took to help me. Thank you.
OK, good luck ;-)