Speaking of Microsoft's signin, I can no longer access my decade-old-held Skype since their SSO integration. I've tried over and over and over and tried every route possible. It is some edge case where the email was previously a microsoft account and the password cannot be reset. I'm not the only one with the issue. Shocking something like this doesnt get resolved for years on.
Authentication in Skype is awful. At one point, for reasons beyond me, I ended up having two accounts:
* One account required me to log in with a username, and was associated with my main email address.
* The other account required me to log in with my main email address.
In a way, they were both related to the same email, but different accounts. This shouldn't even have been possible, but it seems that one was an old MS account, and the other was an old Skype account. My roster ended up being split half and half between the two.
I have a similar Skype issue. I have ancient Skype accounts with usernames, and my email address linked, but now use a Microsoft account for Skype with that same email address. Nobody can find and add my current account - whenever they search for my email address, all of my old usernames appear. I always have to add other users instead.
Very frustrating - fortunately I don't use Skype regularly but it's always an exercise when somebody asks for my username.
I had this problem, too. I fixed it by deleting my non-Skype account & waiting about 60 days.[1] Changing the email of the non-Skype account might have worked, too, but I didn't need two accounts & didn't mind waiting.
