#MAC MICROSOFT OUTLOOK CANNOT OPEN MACOS HOW TO#
Referencesįor more information about REST for Outlook for Mac, see Outlook for Mac improves calendar sharing performance with REST.įor more information about how to share a folder in Outlook for Mac, see Share a folder in an Exchange account. Continue reading the page to know the complete solution to fix the issue. To be able to open the other user's Second Calendar folder, you must have at least the Reviewer permission to their default Calendar folder. If you cannot access your Outlook items when you are in offline, then try exporting data to PST, and then delete the OST. In this example, Second Calendar is a subfolder of Calendar. If you receive this message, launch Keychain Access and ensure that both the 'MicrosoftIntermediateCertificates' and 'MicrosoftEntit圜ertificates' are present under 'Keychains'. In Outlook for Mac, you must have at least the Reviewer permission to access the other user's default Calendar folder so that you can also access any subcalendar folders.įor example, you have permissions to the following shared Calendar folders: macOS In Outlook 2016 for Mac, a signed email message reports, 'The signing certificate for this message is not valid or trusted'. On the Organize tab, click Open Shared Calendar. At the bottom of the navigation bar, click Calendar. Microsoft 365 accounts that use REST are no longer affected by this issue. Open a shared Exchange calendar in Outlook for Mac. This issue is caused by a limitation in the EWS protocol that is used for Exchange on-premises accounts. This issue does not occur for Office 365 accounts that are using the REST protocol for Calendar. To fix this issue, the calendar owner must share both the primary and the secondary Calendar folders with you. This issue occurs because the owner of the folder that you want to access shares the subcalendar folder with you but does not share their default (primary) Calendar folder. You do not have permission to open this folder. Ctrl+click or right-click Microsoft Outlook, and then select Show Package Contents. From Finder, open the Applications folder. When you try to open a shared Calendar folder in Outlook 2016 for Mac or Outlook for Mac 2011, you receive the following error message even though you were granted permission to the folder: Here are the steps to create a new profile in Outlook for Mac: Note: These steps must be used with Outlook 2016 for Mac or Outlook 2019 for Mac.