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Office 365 (Known Issues) - Importing ICS Files in Outlook

There is a known issue with importing ics files within the Outlook Web App and Outlook desktop clients for both Mac and Windows. Message displayed: The events couldn't be imported. Please try again later. Error message: An internal server error occurred. The operation failed.


Open the .ICS file in a text editor like Notepad for Windows or TextEdit for Mac, then search for METHOD: REQUEST and change that to METHOD:PUBLISH, save the changes and proceed to import the file as you were doing it.

Keywords:office 365, o365, known, issue, import, ics, file, importing, problem, how to, outlook, mac, windows   Doc ID:78786
Owner:Help Desk K.Group:UW-Milwaukee Help Desk
Created:2017-12-15 13:47 CDTUpdated:2022-08-01 16:44 CDT
Sites:UW-Milwaukee Help Desk
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