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Error: Selected Server "HV01" is unavailable

  • June 20, 2025
  • 7 comments
  • 1139 views
P

Hi everyone,

I’m encountering an issue with an Off-Host backup job in Veeam. The job fails with the following error:

"Selected server HV01 is unavailable."

Here’s what makes this confusing:

  • HV01 is the Veeam Backup Server itself

  • I’m currently logged in to HV01, and it's definitely online

  • The VM being backed up is up and running

  • It’s just one VM in this Off-Host backup job

  • I’ve already checked the Veeam services, DNS resolution, and proxy configuration – all seem fine

Any idea why Veeam thinks the server is unavailable – even though it’s the Veeam server itself?

Thanks in advance for any help or pointers!

Cheers

Best answer by priosafe

Hi Guys,

it was just simply a storage issue the NFS Storage was not available, now we changed it to SMB and now it works.

 

Thanks y’all.

Chris.Childerhose
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7 comments

MarkBoothman
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  • MarkBoothman
  • Influencer
  • June 20, 2025

Have you checked the windows event logs and DB logs. It could be a resource issue or a db issue.

 I would also check the job logs as well. These can be found in the below location %ProgramData%\Veeam\Backup\%job name%

VMCA2022 | VMCE2021/5 | VUG UK Leader
Chris.Childerhose
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coolsport00
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  • coolsport00
  • Veeam Legend
  • June 20, 2025

In VBR > Backup Infrastructure node > Managed Servers...does HV01 show ‘unavailable’ there? Whether it does or does not, maybe rt-click and go through the Properties again, or do a rescan.

Aside from checking the logs as Mark shared, maybe give Support a try.

Best.

Shane Williford - Veeam VMCA/VMCE | Veeam Legend | VUG Leader | VCP-DCV | Twitter: @coolsport00
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Stabz
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  • Stabz
  • Veeam Legend
  • June 20, 2025

Hey

Versions of a Microsoft Hyper-V host and off-host backup proxy must coincide. For example, if you use a Microsoft Windows Server 2012 machine with the Hyper-V role enabled as a Microsoft Hyper-V host, you must deploy the off-host backup proxy on a Microsoft Windows Server 2012 machine with the Hyper-V role enabled.

is that Ok on your side ?

Philippe DUPUIS |Veeam Certified Engineer | https://original-network.com/
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Tommy O'Shea
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  • Tommy O'Shea
  • Veeam Legend
  • June 20, 2025

If this is a backup job using an “Off-Host” backup proxy, then you need to make sure that the proxy server has all the required access to the HV-01.

If the proxy server is HV-01, then you should be using an On-Host backup.

Tommy O’Shea, VMCE, VMCE-SP, VMCA
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P
  • priosafe
  • Author
  • Not a newbie anymore
  • Answer
  • June 20, 2025

Hi Guys,

it was just simply a storage issue the NFS Storage was not available, now we changed it to SMB and now it works.

 

Thanks y’all.

coolsport00
Stabz
Tommy O'Shea
Tommy O'Shea
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  • Tommy O'Shea
  • Veeam Legend
  • June 20, 2025

Glad to hear you identified the issue. Be sure to select a comment as the best answer, even if it is your own. 

Tommy O’Shea, VMCE, VMCE-SP, VMCA
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coolsport00
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  • coolsport00
  • Veeam Legend
  • June 20, 2025

Awesome! Glad to hear ​@priosafe 

Shane Williford - Veeam VMCA/VMCE | Veeam Legend | VUG Leader | VCP-DCV | Twitter: @coolsport00
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Tommy O'Shea
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