Using Classic Outlook on Windows for personal email, calendar, and contact management
I've found elsewhere you can mitigate this by disabling the WebClient service. The only issue is that I'm not sure what else this will break. I believe at the very minimum it will break Sharepoint, which I don't use so I can't test. I haven't noticed an issue with sharing files in Teams, nor have I found an issue with using Excel on the Web. I'm able to open that same spreadsheet that I have open in Excel on the Web (we use it for tracking ticket issues as a team) in Excel on my PC. So I'm a bit confused with what this service will actually break if it's anything beyond Sharepoint.