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Something went wrong while initializing the app error occurs in Microsoft Dynamics 365 App for Outlook

This article provides a workaround for you to solve the Sorry, something went wrong while initializing the app error that occurs when you try to use Microsoft Dynamics 365 App for Outlook.

Applies to:   Microsoft Dynamics 365
Original KB number:   4470398

Symptoms

When attempting to use the Microsoft Dynamics 365 App for Outlook, you see the following message:

Sorry, something went wrong while initializing the app. Please try again, or restart the app.

Cause

If you select the help link in the error message and it directed you to this article, you are likely encountering a known issue related to an expired token.

Workaround

Microsoft is aware of an issue that can result in this error and will be releasing a fix. In the meantime, you can work around this issue by clearing your browser cache with the steps provided in the following article:

Troubleshooting errors when attempting to open Dynamics 365 App for Outlook