
On the taskbar, click the File tab > Account Settings> Account Settings.To add the Outlook data file, you should follow these steps:
#Outlook for mac an unknown error has occurred how to
How to resolve this error code 0x8000ffff? But when you click " Add", you receive this error message: An unknown error occurred, error code: 0x8000ffff.


On the Account Settings dialog box, you click the Data Files tab. You want to add new Outlook data file to your Outlook profile. You're running Microsoft Outlook 2013 or 2016. You may encounter this error message while adding a data file in the Mail applet in Outlook 2016. One of the most common error messages is, " An unknown error occurred, error code: 0x8000ffff". Being an Outlook user, you're likely to receive error messages if there's an issue in Microsoft Outlook client. But, like any other software application, it has some drawbacks. It offers you impressive features and outstanding performance. Microsoft Outlook is the most popular email client among a large number of active users.

How to Fix Outlook Unknown Error 0x8000ffff Effortlessly?
