Datto Windows Agent Error: “Backup Failed Because the Agent Was Unable to Initiate the Backup Job”



When you try to start a backup for a system protected by the Datto Windows Agent, you receive the error message, "BK103: Backup failed because the agent was unable to initiate the backup job."


  • Datto ALTO
  • Datto SIRIS
  • Datto Windows Agent


The Datto appliance attempted to contact the agent on the protected machine, but it received an "Error 500 (Internal Server Error)" response.


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