By clicking the Return key, select the selected file and rename it to osfcore.Look for the framework file in the frameworks folder to fix the “unable to open Outlook on Mac” issue.When you right-click on Microsoft Outlook, choose Show Package Contents from the context menu.In the Finder window, go to the Application.This problem can be simply solved by renaming the file to the amework.įollow the instructions below to solve this issue:

The Mac Outlook 2016 application package is looking for a file called osfcore. The file is called amework in this example. Moving on to the next workaround! Method 2: When the Main File System Is Case-sensitive “Unable to Open Outlook on Mac” Error Occurs If you find that there are no updates for your Office 365 program, then you can jump to the next solution or go to the method that solves your type of problem from the above section. Then select the option to Check for Updates.Select the Help option from the drop-down menu.You can go through the following steps to get started: Method 1: Basic Solution: Microsoft AutoUpdateīefore moving forward with any options, use the AutoUpdate tool as a first step to resolving “unable to open Outlook on Mac” error. There are a ton of reasons for which this error could be showing and different methods to overcome them. How to Solve The “Unable to Open Outlook On Mac” Issue? What can be the reason for this? This can happen because of problematic add-ins, damaged files, corrupted profiles or navigation pane issues.įor quickly helping users, let’s jump right into the methods to resolve this error. It is frustrating for users when they are having a very busy day and they suddenly see that they are unable to view their Outlook on their Mac system. There will be some manual as well as an expert-recommended solution to resolve the issue. Summary: After reading this you won’t have to look any further as this post covers all the solutions you can use to fix the “unable to open Outlook on Mac” issue.

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