I use Outlook (Windows) as well as Outlook.com to access mail and calendar in my Microsoft and Google accounts.
Last night I updated the password for my Google account and was able to update the account settings in Outlook desktop. In that application I am able to access Gmail messages as before, all is good there.
However, after this change, when I try to access Gmail from Outlook.com, I now get the following error:
400 Bad request. An error occurred when you tried to access your mailbox because a server with information about you and your mailbox couldn't be found.
I would like to get this working again as it was before, being able to access Gmail from both Outlook and Outlook.com.