I recently had to install MS authenticator on my work phone, to do so I needed to use the code from MS authenticator. To bypass that I needed to log on to MS to change access option, which wanted the code from MS authenticator to log in.

Try supporting Onedrive for business when Onedrive often fails SSO and people use their work email address to create a personal account because by default Microsoft encourages that unless you aggressively lock that down, and then people will have sensitive work data on an account you can't control, and if they switch computers it gets worse because if they don't know that password and if the old computer is broken there's nothing the business can do to get the data.

Oh, and Adobe does the same thing. Neither tell you upfront that you should disable creation of personal accounts using the work email address/domain. The user won't notice because it doesn't occur to them to select "organization account" and they just click the first option.

Which is also both a security nightmare and GDPR nightmare.

Kowloon Walled City (Chinese: 九龍城寨)[a] was an ungoverned and densely populated de jure Chinese enclave within the boundaries of British Hong Kong.