SUMMARY Adding a Microsoft Exchange email account go through all the authentication steps, including MFA in the browser window, but never adds the mailbox STEPS TO REPRODUCE 1. Attempt to add an Office 365 business account to Kmail using EWS, including the steps to avoid bug in akonadi when using OAuth. 2. Authenticate account and continue through all dialogs 3. Last dialog closes and account never appears in Kmail OBSERVED RESULT Office 365 email account is correctly authenticated, but mailbox never shows up in Kmail. EXPECTED RESULT Office 365 mailbox should appear after in Kmail after adding account with no shown errors. SOFTWARE/OS VERSIONS Windows: macOS: (available in the Info Center app, or by running `kinfo` in a terminal window) Linux/KDE Plasma: KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION