The goal is to manually resolve the version of, and cleanly remove, the deployed components. To do so:
- Verify all of the above to identify this issue positively. If the version mismatch does not exist, you may wish to contact Support.
- On the Veeam server itself, navigate to “C:\Program Files\Veeam\Backup and Replicaton\Backup\Packages” (if default installation path is used).
- Copy VeeamDeploymentDll.dll and VeeamDeploymentSvc.exe to the target host in the path “C:\Windows\Veeam\Backup”. (You may need to grant permission to perform this copy.)
- From an Administrator command prompt, run: sc delete veeamdeploysvc
- Double-click on the service executable on the host, and choose “Repair” as you proceed through the wizard.
For details on the sc delete command, see https://technet.microsoft.com/en-us/library/cc742045(v=ws.11).aspx You should be able to add the host now through the Veeam console at this point.