The Application Microsoft Outlook Cannot Be Opened Mac

May 20, 2019 In Microsoft Outlook 2016 for Mac running on Mac OS X Yosemite (10.10) or later versions, you cannot set Outlook as the default application. In Outlook Preferences, under General, you enable the Make Outlook the default application for e-mail, calendar, and contacts option. However, when you check the general preferences again, this option is not enabled. Jun 16, 2018  Outlook app cannot open on Mac. I can't open my Outlook App Ver 16.14 on MacOS High Sierra 10.13.5 This thread is locked. You can follow the question or vote as helpful, but you cannot. Despite being one of the most widely used emailing applications, MS Outlook often faces unexpected bugs and errors. One of the most frequent errors is “Cannot start Microsoft Outlook”.

Discusses that you cannot install an update for Microsoft Office for Mac 2011 or Microsoft Office for Mac 2008. Provides several methods to help resolve the problem. Office for Mac update error: 'Office can't be installed on this disk'.

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Note

Office 365 ProPlus is being renamed to Microsoft 365 Apps for enterprise. For more information about this change, read this blog post.

Symptoms

When you try to start any Office for Mac applications (Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Entourage, or Microsoft Outlook for Mac) in Mac OS X 10.6.x (Snow Leopard), you receive the following error message:

Cause

This error occurs if the Office program was moved or duplicated.

Resolution

Step 1: Check the program path

When the error message is displayed, view the comments under 'Problem Details and System Configuration.'. Note the 'Path' that is listed in the error message, and then close the error message box. The path must be as follows:

Macintosh HDApplicationsMicrosoft Office 2008

Macintosh HDApplicationsMicrosoft Office 2011

If the path in the error message differs, you must move the application folder to its correction location. To do this, follow these steps:

  1. Locate the Office 2008 folder.
  2. Click to select the folder.
  3. On the Finder menu, click Edit, and then select Copy Microsoft Office 2008 or Copy Microsoft Office 2011.
  4. On the Finder menu, click Go, and then select Applications.
  5. On the Finder menu, click Edit, and then select Paste the Item.
  6. Start the Office program to see whether the problem is resolved.

If the problem continues to occur, there might be duplicate entries.

Step 2: Delete duplicate entries

To delete duplicate entries, follow these steps:

  1. On the Finder menu, click File, and then click Find.

  2. In the search box, type the program name, and then press Enter. For example, type Excel.

  3. In the results, look for duplicate instances of the Excel icon. If there is only one icon, go to 'step 3'. If there are several Excel icons, select a duplicate icon. On the Finder menu, click File, and then select Move to Trash.

  4. Empty the Trash.

  5. Start the Office program. If the problem continues to occur, remove and then reinstall the Office program.

Step 3: Remove and then reinstall Office

Outlook Files Cannot Be Opened

Office 2011

To remove Office 2011, follow these steps:

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Microsoft Outlook Cannot Be Opened Mac

  1. Quit all applications.
  2. In the Finder, click Go select Computer.
  3. Open your hard drive (Macintosh HD), then open the Application Folder.
  4. Click to select Microsoft Office 2011 drag and then drop it to the Trash.
  5. Reinstall Office for Mac 2011.

Office 2008

To remove Office 2008, follow these steps:

  1. Quits all applications.
  2. In the Finder, click Go, and then select Computer.
  3. Open Macintosh HD, then open the Applications folder.
  4. Open the Microsoft Office 2008 folder.
  5. Open the Additional Tools folder.
  6. Double-click the Remove Office file. The 'Remove Office' window will open.
  7. Click Continue.
  8. Follow the directions that are provided.
  9. Reinstall Office 2008 on your computer.

As of September 25, 2017, macOS 10.13 High Sierra is publicly available for all Mac users to install. Office 2016 for Mac is fully supported on High Sierra. For the best experience, we recommend you update Office to version 15.38 or later.

For updates regarding macOS 10.14 Mojave, see Microsoft Office support for macOS 10.14 Mojave.

Office 2016 for Mac

See 'What version of Office am I using?' if you don't know what version you're on.

The Application Microsoft Outlook Cannot Be Opened Machine

Version of Office

Supportability

15.35 and later

Office 2016 for Mac is fully supported on macOS 10.13 High Sierra.

If you encounter issues using Office 2016 for Mac, please send us feedback so we can address them. In Word, Excel, PowerPoint and OneNote, you can click on the Send a Smile icon in the top-right of the app. For Outlook, choose Contact Support from the Help menu.

15.34 and earlier

These versions are not supported on 10.13. In some cases, you may not be able to launch the Office apps. For example, users will see the following error message when attempting to launch Outlook 2016 ver. 15.34:

If you installed Outlook 2016 ver. 15.34 or earlier, and are not being offered an update to 15.35 or later, download the latest Office 2016 for Mac Suite Installer here.

Office for Mac 2011

Word, Excel, PowerPoint, Outlook and Lync have not been tested on macOS 10.13 High Sierra, and no formal support for this configuration will be provided.

Cannot Open Outlook On Mac

Since October 10, 2017, Office for Mac 2011* is no longer supported. This means there will be no new security updates, non-security updates, free or paid assisted support options, or technical content updates. Refer to the Microsoft Support Lifecycle for more information.

The File Cannot Be Opened

* Lync for Mac 2011 has a limited time of Extended Support for security fixes.