Originally posted at answers.microsoft.com, but was told to repost it here.

I just installed Windows 10 on a work laptop, installed all updates, and noticed that the Mail app doesn't let me add my Office 365 email (w/ single sign-on). It'll take me to my organization's single sign-on page. But after I signed in, it'll redirect to a blank page except for a # at the upper left corner. If I tried to add a work account (Settings -> Account), the same error occurs.

If I go to outlook.office365.com, I can sign in using my org's single sign-on page just fine.

After comparing installed Windows Updates, it turned out that KB3081444 was the culprit. Uninstalling it resolve the problem.

• Edited by J-Liu 1 hour 16 minutes ago