Hi,
I am afraid this is a forum support channel and does not have a direct hotline to help you.
If you are on a Mac which I assume so,
- Open the Apple menu and select System Settings.
- Click Privacy & Security in the left sidebar.
- Scroll down to the Security section.
- Look for the note about "Microsoft Update Assistant" being blocked, and click Open Anyway.
- Enter your Mac password to confirm, then proceed.
I look forward to hearing from you to get the results of the troubleshooting.