I had to reinstall Win10 the other day because of some strange error incurred while running Acronis True Image. The install ISO was 1909, build 18363.592. It’s not a big deal as I don’t have that many programs and I save my Firefox profile regularly. I now have a strange issue with Firefox. When I try to email a weblink either with the email button on Firefox or the share link on a webpage the ‘Add Mail Account to Win10’ pops up. This makes it impossible to mail the link as I don’t want to add the mail account. I already use Outlook 2013 for email.
I just checked MSFT Edge browser and I don’t get this same problem. It asks me if I want to use Outlook and an email pops up.
I didn’t have this problem with my old install of Win10 which was I think 1903. I don’t know if this is a new Win10 bug or not.