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Original KB number: 2847732
Outlook for Mac does not support “direct booking” as Outlook for Windows does. Direct booking is a MAPI-only feature and Outlook for Mac uses Exchange Web Services. However, you can use Resource mailbox the same way as in Outlook for Windows. See the article Managing Resource Mailboxes. Outlook for Mac does not support a way to replace. Outlook isn't the default email application until you change that setting. How to use the tool. Download and open the Default Mail Application tool. In the Default Mail Application dialog box, select com.microsoft.outlook, and then click Make Default. Exit the Default Mail Application tool.
When you examine the Windows taskbar, the Outlook icon is not displayed even though Outlook is running and there is an Outlook icon in the notification area of the taskbar. The following figure demonstrates this problem.
This scenario occurs when you have enabled the Hide When Minimized option for Outlook and you minimize the main Outlook window. This option is available when you select the Outlook icon in the notification area.
To change your Outlook configuration so that the Outlook icon is displayed in the taskbar when Outlook is running, use the following steps:
The Hide When Minimized option is controlled by the following registry data.
Key: HKEY_CURRENT_USERsoftwareMicrosoftofficex.0OutlookPreferences
DWORD: MinToTray
Values:
0 (or missing DWORD value) = Outlook icon displayed in the taskbar when Outlook is running
1 = Outlook icon is not displayed in the taskbar when Outlook is running and you minimize the Outlook window
Note
The x.0 placeholder represents your version of Office (16.0 = Office 2016, Office 365 and Office 2019, 15.0 = Office 2013, 14.0 = Office 2010, 12.0 = Office 2007, 11.0 = Office 2003).