Microsoft has issued a workaround which should mend the problem and we have published full details below. To fix Outlook follow these steps.
• Right Click the Windows Start button, and then choose Run.
• In the Open box, type regedit, and then select OK.
• In the left pane, expand Computer and then expand HKEY_CURRENT_USERSOFTWAREMicrosoftOffice16.0OutlookPST
• Under the PST key delete the registry keys below and then restart Outlook: “LastCorruptStore”=”C:Usersuser.REDMONDAppDataLocalMicrosoftOutlook Email address is removed for privacy “