Adding on-premises SharePoint organization to Veeam Backup for Microsoft 365 fails with “Encountered an internal error in the SSL library”

KB ID: 2693
Product: Veeam Backup for Microsoft 365 | Veeam Backup for Microsoft Office 365 2.0 | Veeam Backup for Microsoft Office 365 3.0 | Veeam Backup for Microsoft Office 365 4.0 | Veeam Backup for Microsoft Office 365 5.0 | 6.0
Published: 2018-07-24
Last Modified: 2022-05-19
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Challenge

Adding an on-premises SharePoint organization with the Use SSL parameter enabled fails with the following error:

“Connecting to remote server <servername> failed with the following error message: The server certificate on the destination computer (<servername>:<port>) has the following errors: Encountered an internal error in the SSL library.”

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Cause

WinRM service is not configured to use HTTPS.

Solution

To make WinRM use HTTPS, please follow Microsoft article How To: Configure WINRM for HTTPS on each machine in your SharePoint farm.
Once done, ensure that a specified port matches the one configured as per the article above, and try adding organization again.

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