That is a fairly new feature for Sync; an email is sent the email address that was used when Sync was originally setup and the needing click the hyperlink in the browser that you are using when going to {re}connect to Sync.

I did have to go thru that email confirmation and response rigamarole just this afternoon on my desktop PC when I disconnected from Sync for answering another support question from a user who was having a problem reconnecting to Sync and it seeming to hang with a "Working ..." message that never ended. And got that "drill" when I went to reconnect to my Sync account, First time I have had to deal with that new feature as I rarely ever disconnect; which might why I got that today - an unusual action for my account, being disabled. I don't have a laptop to verify that email rigamarole doesn't (or does) happen with a laptop at this time.

I do wonder why a user wouldn't get a confirmation email on laptop, but does on a desktop is something I don't understand. If there is supposed to be a difference in that feature for desktop and laptop devices, it seems to make more sense to me for that to happen for laptops which are more prone to be lost, than it making sense for a desktop PC that is less likely to be stolen.

And I don't know how that feature would relate to a "bank" which is hard to lose and won't "disappear". Facetiousness aside, some banks have started checking IP addresses for logins to mobile bank websites for user security from what I have seen posted at a few different fora, and some action is required by the user if the bank website doesn't "recognize" the IP address as being normally used by the user. It seems when that happens the user is expected to answer their preset "secret questions"; silly stuff like "name of your first pet", "name of your favorite primary school teacher". "name of your prim date", and similar questions to verify that they are who they purport.

Thank you for your prompt and lengthy reply!! The behavior does seem strange, requiring to confirm an email each time, for example, I can sign out and back in to this forum without having to respond to a confirmation email. And why it doesn't do it on my laptops is also strange. Perhaps if some others reading this and who use sync (a great feature, by the way, thank you Mozilla people!) see the same "feature" it can be determined if it should be considered a bug of some kind. Again, me and my first pet thank you for your response!

This forum - SuMO - has absolutely no connection to Firefox Sync services which uses a Firefox Account, and the registration for SuMO is separate from Firefox Account, although I think they will ne merged soon.

And as far as differences of data types between this forum and Sync, Sync stores user password for all sorts of websites including financial, while this forum stores very little personal data and no data that is critical. Of course "security" features will differ between the two.

Thank you, I'll check out SuMO. Appreciate your time.

SuMO - Support.Mozilla.Org = an abbreviation for this fora - https://support.mozilla.org/