Some macOS 15.5 Mail users are dealing with authentication issues when using the app with Microsoft or Google accounts. It’s not yet clear why.
Apple Mail icon
Issues with Apple Software are an occasional problem for users, but sometimes the reason for their existence can’t be explained easily. Now, it seems that one such problem is starting to crop up in Mail on macOS.
A Reddit post on the r/mac subreddit by u/Jollylook explains the issuein a few images, in that Mail for macOS has difficulty authenticating accounts and accessing servers. In the Redditor’s case, they woke up to see that Mail can’t verify the identity of a Microsoft Outlook server.
