KB2442: Troubleshooting VDDK error 16053 - Veeam Software
https://www.veeam.com/kb244206.02.2018 · Open the folder that matches the name of the failing Job. Find the log file matching the nomenclature Agent.Job_Name.Source.VM_Name.vmdk.log. Open the file with any text editor and search for: VDDK error: 16053 (One or more required subsystems failed to initialize) Example snippet: [DD.MM.YYYY HH:MM:SS] < 12620> cli| ERR |Command 'Open' has failed.