The "Connect to EWS: SOAP header Action was not understood" error occurs when validating an Office 365 Organization

KB ID:
2988
Product:
Veeam Backup for Microsoft Office 365
Version:
3.x
Published:
Last Modified:
2019-08-16

Challenge

When adding or editing an Office 365 organization, the following unexpected error occurs: "Connect to EWS: SOAP header Action was not understood".

User-added image

Cause

The error may occur when establishing a connection to the Exchange Web Services (EWS).

Solution

As a workaround, you can temporarily assign a mailbox to your service account that is used to add or back up an Office 365 organization.

If you cannot assign a mailbox to your service account due to license limitations, contact Veeam Technical Support.

 

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