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When running backup or replication jobs for Windows virtual machines hosted on Nutanix AHV, Proxmox VE, or Scale Computing HyperCore with Veeam Backup & Replication 13.0.1 Patch 2, guest processing fails with one of the following errors: Failed to install guest processing components for [VM name]. Error: Failed to connect to the guest OS. or Failed to prepare guest for hot backup. Error: Cannot start service. Machine: [IP address]. Service: [VeeamGuestHelper]. Cannot start service. Win32 error: The service did not respond to the start or control request in a timely fashion. Code: 1053
This issue occurs due to an in-guest processing component that may be assigned an invalid port value, preventing it from initializing.
Install the private fix provided below. Note: This fix applies only to Veeam Backup & Replication build 13.0.1.2067. Verify your build number under Help > About before proceeding. Ensure no backup, replication, or restore sessions are currently running. Close Veeam Backup & Replication Console on all machines where it is open. On the Veeam Backup & Replication server, execute the private fix file as an Administrator. Follow the on-screen prompts to complete the installation. Reopen the console and confirm that guest processing completes successfully for the affected VMs.
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