On the ZVM, the Windows Event Viewer shows repeated Schannel errors of "A fatal error occurred while creating a TLS client credential. The internal error state is 10013."

There are various causes of this error being seen in Microsoft Windows servers and is outside of the dr2cloud Zerto product. Further information can be found in this Microsoft TechNet Article.



  • Stopping the Zerto Online Services Connector will prevent the errors, or
  • Enabling TLS 1.0 will prevent the errors. 

If further assistance is needed for this, it is recommended to contact Microsoft Support.