A Microsoft file hosting and synchronization service.
I have exactly the same problem as Dan. One drive and access to my personal vault is OK on my old phone Samsung A33 5G but I cannot access my personal vault on my new phone Samsung A57 5G. When I tap on the personal vault to set it up it completes verification using Authenticator, accepts the 6 digit code (same as my login code) scans my driving licence and uploads it toa file I choose then loops back to the beginning sayin file not uploaded but it does upload as it is there in my folder. I know I can access my personal folder from my desktop but I do not normally carry that around with me! SOLVED
I went through set up once more but used a different 6 digit code to that for my phone and it worked first time without the need to upload a scan??? Is that 2FA?