However, Outlook 2016 for Mac looks for a file that is named osfcore.framework and cannot find the file inside the app bundle. To work around this problem, rename the OsfCore.framework file as osfcore.framework. To do this, follow these steps: In Finder, open the Application folder. By default, Outlook 2016 for Mac OS X will sync all IMAP folders. To specify which ones you want to sync, pull down under the Tools menu and select IMAP Folders to bring up the Folder Browser. In the Folder Browser, you will see a list of your accounts in the left pane. Outlook 2016 can only connect to Exchange using AutoDiscover feature. A special DNS record must be configured for your domain in order for you to take advantage of the Outlook 2016. Outlook 2016 profile cannot be created with Outlook profile helper tool or Single Sign-On tool. Outlook 2016 doesn't support manual setup for Exchange accounts. Our external clients (Mac and Outlook 2007; 2010; 2013; 2016) are connected over a TMG 2010 Sever, where the authentication mode also is set to basic. As far as I remember we configured the authentication mode to basic because of password prompts in Outlook 2007 but I'm not sure. If the issue persists, please back up your data, then try to re-add your account and check if the issue persists. And you can contact in-app support for further assistance as we have dedicated team to help with this kind of issue. Please follow New Contact Support feature in Outlook 2016 for Mac.
Fix authentication failed errors in Outlook 2016 on Mac.
Applies to: E-mail, Web Hosting
Log Into Outlook 2016
Difficulty:![Input Input](/uploads/1/1/9/8/119848742/860381161.png)
Problem
Outlook 2016 Cannot Start Microsoft Outlook
When you access your email in Outlook 2016 for Mac the following error can occur:
Mail could not be received at this time The server for account “example” returned the error “[AUTHENTICATIONFAILED] Authentication failed..” Your username/password or security settings may be incorrect. Would you like to try re-entering your password?
Symptom
- When you open or send and receive email from Outlook 2016 for Mac the error is shown.
Cause
Outlook 2016 cannot connect your email account because the username or password it is using is incorrect.
Resolution
Check your email password is correct and you are using your full email address, for example. [email protected], for the username in your Outlook 2016 settings.
You can also Reset your email password in cPanel
Screenshot of Error
-->Original KB number: 3014451
Symptoms
Microsoft Outlook 2016 for Mac crashes immediately after startup. The crash reporter displays the following error information.
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000Application Specific Information:
Exception Codes: 0x0000000000000002, 0x0000000000000000Application Specific Information:
dyld: launch, loading dependent librariesDyld Error Message:
Library not loaded: @rpath/osfcore.framework/Versions/A/osfcore
Library not loaded: @rpath/osfcore.framework/Versions/A/osfcore
Referenced from: /Applications/Microsoft Outlook.app/Contents/MacOS/Microsoft Outlook
Reason:image not found
Reason:image not found
Cause
This problem occurs if the underlying file system is formatted as case-sensitive. In this scenario, the file is named OsfCore.framework. However, Outlook 2016 for Mac looks for a file that is named osfcore.framework and cannot find the file inside the app bundle.
Workaround
To work around this problem, rename the OsfCore.framework file as osfcore.framework. To do this, follow these steps:
- In Finder, open the Application folder.
- Right-click Microsoft Outlook, and then select Show Package Contents.
- Open the Frameworks folder, and then find the OsfCore.framework file.
- Select OsfCore.framework, press Return, and then change the file name to osfcore.framework.
More information
You can use Disk Utility to determine whether the file system is formatted as case-sensitive. To do this, run Disk Utility, select the hard disk drive partition, and then select the Erase tab to view the Format option that's selected. If either of the case-sensitive options are selected, you may experience this problem.