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Outlook 2016 Mac Does Not Open? Get Your Solution Here!

Published By Chirag Arora
Approved By Anuraag Singh
Published On August 16th, 2022
Reading Time 4 Minutes Reading

Summary: This blog post explains how to fix Outlook 2016 for Mac not opening issue. In addition to the manual method, it also provides you with one of the best third-party repair solutions. Please read on for more information.

If Microsoft Outlook fails to start, please do not despair. It may be easier to restore and use the email client than you think. The correct decision will depend on the situation in which you are and the version of Microsoft Outlook that you running. The following article shows how to fix Outlook 2016 for Mac not opening issue.

Simple Solution: Microsoft AutoUpdate for Mac

The first major solution to this situation is to activate the AutoUpdate function. To run this, follow these steps:

  1. Open Microsoft Office 365 program.
  2. Navigate to Help menu.
  3. Here, Check for Updates option.

Possible Reason Behind Outlook 2016 for Mac Not Opening Issue

This issue takes place if the main file system is formatted as case sensitive. In this case, the file is called OsfCore.framework. However, Outlook 2016 for Mac is looking for a file called osfcore.framework and cannot find this file in the application bundle.


In order to resolve this problem you need to rename OsfCore.framework file to osfcore.framework. Implement following steps to do the same:

  1. In Finder window, open Application folder.
  2. Then, right click on Microsoft Outlook and click on Show Package Contents.
  3. Now, open Frameworks folder and find OsfCore.framework file.
  4. Choose OsfCore.framework, press Return key and change the file name to osfcore.framework.

Alternative Solution to Fix Outlook 2016 for Mac Not Opening

If you are facing issues while running Microsoft Outlook 2016 on Mac system and your Outlook 2016 Mac does not open, then there might be chances of profile corruption as well. In such scenarios, many users are unable to open Outlook 2016 for Mac and cannot access their mailbox data. Thus, to remove corruption, you are suggested to use Mac Outlook Database Rebuild Utility on system. This application is capable enough to remove severe corruption levels and export data in healthy format. Even the novice users can run this software on their Mac OS.

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Step by Step by Procedure to Run this Tool

If you want to fix Outlook 2016 for Mac not opening issue by removing corruption, then you can run this application as explained below:

Step 1: Download this software on Mac OS and select first option to Auto Locate Outlook 2016 profile.

Step 2: The tool will start the scan procedure and offer you 10 export options.

Step 3: You can also select the destination path and hit Export button to start the process.

Step 3: It will now display the progress status of the procedure.

Step 4: The software will finally show the completion message once the task completes.

Why Opt for Third-Party Solution?

Third-party solutions are not only simple, quick, and efficient, but also fully automated. Consequently, it does not require human intervention; it has few chances for compromise.

There are necessarily thousands of solutions in the market, but the process of choosing them is a bit tedious. The reason is that not all tools are reliable. Therefore, based on different analyses of knowledgeable and experienced professionals, we have selected one of the best maintenance solutions from different product series to make your maintenance journey comfortable and stable.

Also Read: Outlook for Mac Keeps Crashing at Startup on your System


When talking about multiple software, failures and problems are unavoidable. The same is true for Mac Office. A common issue users encounter is Microsoft Outlook 2016 for Mac not opening or not open. Therefore, when faced with a similar situation, the above solution is a reliable approach. If users are facing this problem due to corruption, then it is recommended to go for third-party tool.

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