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installing Veeam agent on Microsoft CoPilot-managed machines

  • May 21, 2025
  • 6 comments
  • 50 views

Hello.  Looking for feedback on installing the Veeam Windows agent on a desktop machine that’s managed by Microsoft CoPilot

 

We have a service account with a known good password.  VBR requires that the credential be entered as “DOMAIN\username” .  But since the target machine is managed with CoPilot, it seems to need logins to use “username@DOMAIN”

 

When we try to use the “DOMAIN\username” credentials to push the agent, we are getting a “invalid username or password” error from the VBR console, even though we’ve tested the account and we know the password is good

 

Is there any way around this account format issue?

 

we did try entering the credentials in VBR as “user@DOMAIN” but that didn’t work either.

6 comments

Chris.Childerhose
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  • Veeam Legend, Veeam Vanguard
  • 9587 comments
  • May 21, 2025

Never seen this before so it seems odd that a domain machine would not take credentials.

Have you tried a local administrator account - hostname\username?

It that does not work either you might need to work with support on this one.  Never heard of a CoPilot managed machine.


Mohamed Ali
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  • VUG Leader
  • 85 comments
  • May 21, 2025

@euclids_bellybutton Credentials must be specified in the down level logon name format  (DOMAIN\USERNAME or HOSTNAME\USERNAME) 

https://helpcenter.veeam.com/docs/backup/agents/protection_group_accounts.html?ver=120

Since the desktop is CoPilot managed it doesn’t recognize on-prem domain accounts. If the desktop is Azure AD joined only, it won’t accept DOMAIN\username format. 

 

As a workaround, you can try using a local administrator account (HOSTNAME\USERNAMEinstead of a domain or Entra ID account for the push installation.

 

 


Rick Vanover
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  • RICKATRON
  • 874 comments
  • May 21, 2025

This is a good one - I’ll also share this internally. 


Rick Vanover
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  • RICKATRON
  • 874 comments
  • May 21, 2025

I found in the Agent Management guide that USERNAME@DOMAIN is currently not supported: Step 4. Specify Credentials - Veeam Agent Management Guide


But I’ll see if I can start a feature request for this (no promises in public!).


Rick Vanover
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  • RICKATRON
  • 874 comments
  • May 21, 2025

Well that moved nice and quick. I will create a feature request for this internally.


coolsport00
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  • Veeam Legend
  • 4903 comments
  • June 5, 2025

Saw this post and found it intriguing so commenting so I can follow. Looking fwd to see how this goes.