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: | 2019-08-16 |
| Last Modified: | 2020-08-13 |
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Challenge
When adding or editing an Office 365 organization, the following unexpected error occurs: "Connect to EWS: SOAP header Action was not understood".
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.
If you cannot assign a mailbox to your service account due to license limitations, contact Veeam Technical Support.
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