repeated fuse messages with catalina

Ok, this actually solved the problem and stopped the FUSE/ShareFile incessant popups. This is the best info I got so far. I needed to update Citrix SF. Check out this thread: https://community.sharefilesupport.com/citrixsharefile/topics/citrix-files-for-macos-catalina

Update whatever is using FUSE. In my case it was Citrix ShareFile. See the link I posted below to a thread about updating to a version of Citrix that works with Catalina. I was getting the same error message (5 times, every 15 seconds) that you wrote above. I couldn't tell it was ShareFile that was at issue, because all it mentions is FUSE and it appears to come from Apple's OS, not any software. Then, I saw there was the S icon on the message and made the connection that it might be related to ShareFile.

Hi there, BPusey.

I see that a third-party application called "FUSE for macOS” is causing your Mac to display a message that the application isn't supported on macOS Catalina. Good job in updating the application, and I'm glad to help.

If an app won't run or install on your Mac after you upgrade macOS -- This article provides the information on what to do if a third-party application isn't working as expected. Feel free to skip any steps you've already tried.

Take care.

Contact the developer, Benjamin Fleischer, for help. Remove the plug-in for now. Apple's position is that they are not responsible for third-party software. Thus, we don't provide support in these forums.

FYI: These are user-only forums. You are not speaking to Apple. if you need to speak with Apple Support, then contact product and tech support:  Contacting Apple for support and service including international calling numbers.

Thank you for your understanding and support.

It might have been helpful to provide that information in your original post. Keep this in mind should you need help again: Please read Writing an effective Apple Support Communities question. We are here to help. We are all users. We are not mind-readers nor clairvoyants. We only know what you write down and tell us. Be specific and thorough. Include your hardware information and installed version of macOS.

Happy Holidays.

That is a useless response...

Agreed. Someone save us. This is killing my experience. Better yet, can I go back to no Catalina?

I really just want to go back to Mohave until Apple fixes all Catalina's issues. This is ridiculous.

The problem is Fuse, not macOS. How to Downgrade from macOS Catalina to Mojave or Earlier.