Cannot connect to the host's administrative share

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Cannot connect to the host's administrative share

Veeam Logoby stanyb » Fri Feb 28, 2014 10:20 am

Hi,
we're reorganizing our Veeam setup. But we're discovering issues with replication and backup fot the VM's in DMZ. Strange thing is that it does work on the old Veeam server.
the error is, Failed to connect to guest agent. Errors: 'Cannot connect to the host's administrative share. Host: [w.x.y.z]. Account: []. Win32 error:The network path was not found. Code: 53'.
I found kb article http://www.veeam.com/kb1230 which does make sense, but I can't understand why my old Veeam server doesn't have the issue.
The admin shares aren't accessible manually, but this is also the case on the old Veeam server.

The differences between old and new Veeam server, are:
1) New Veeam servers are member of the vCenter, old server is running on a seperate ESXi.
2) New Veeam servers are running Windows Server 2012, old server is running Windows Server 2008 R2 SP1.

Does anyone have an idea.
stanyb
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Re: Cannot connect to the host's administrative share

Veeam Logoby foggy » Fri Feb 28, 2014 10:46 am

Stanislas, does the job fail over to VIX to deploy Veeam runtime agent into VM or just fails? Have you tried to configure the registry key mentioned in the KB?
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Re: Cannot connect to the host's administrative share

Veeam Logoby stanyb » Fri Feb 28, 2014 2:04 pm

Alexander, thanx for your reply.
Don't think it's the VIX part, I think it just fails.
I'll try the registry key, but doesn't it have impact on all other jobs?
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Re: Cannot connect to the host's administrative share

Veeam Logoby foggy » Fri Feb 28, 2014 2:16 pm

I recommend contacting support then, probably this is not the actual reason of the failure as normally the job should attempt using VIX after being unable to connect via network.
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Re: Cannot connect to the host's administrative share

Veeam Logoby stanyb » Fri Feb 28, 2014 2:24 pm

Okey Alexander, thx for your suggestion.
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[MERGED] vm backup domain controller

Veeam Logoby cgeorge » Thu Mar 27, 2014 11:25 am

Hallo, I have a 2012 domain controller that i want to backup and every time i get the following errors:

I already check out this article but everything they say is ok for my environnement

http://www.veeam.com/kb1230
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Re: Cannot connect to the host's administrative share

Veeam Logoby Vitaliy S. » Thu Mar 27, 2014 12:13 pm

Hello Carol, kindly please avoid posting log snippets, since it’s against our forum rules. As to your issue with backing up a DC VM with AAIP option enabled, then please contact our technical team directly for troubleshooting. Thank you!
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[MERGED] can't backup a VM

Veeam Logoby jamerson » Tue Apr 29, 2014 3:59 pm

hi guys
I have one VM on SSD which I can't back up !
every night it comes back with a error !
is this a Admin right or something else ?
Note : the user we use for the back up is Global admin !

Code: Select all
Processing 'Win7' Error: Failed to connect to guest agent. Errors: 'Cannot connect to the host's administrative share. Host: [192.168.4.5]. Account: []. Win32 error:The network path was not found. Code: 53 Cannot connect to the host's administrative share. Host: [fe80::886b:65e4:e9de:ea15]. Account: []. Win32 error:The network path was not found. Code: 53 Cannot connect to the host's administrative share. Host: [10.0.8.6]. Account: []. Win32 error:The network path was not found. Code: 53 '
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Re: can't backup a VM

Veeam Logoby v.Eremin » Tue Apr 29, 2014 4:05 pm

Hi, Julien,

So, you're using Application Aware Image Processing, right? Can you please double check the credentials used by this option? Make sure to specify an account with local administrator privileges. Also, you can try to connect from any machine to the remote Admin share of the VM in question and later re-run the job again. Sometimes it helps to get rid of the said errors.

Thanks.
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Re: Cannot connect to the host's administrative share

Veeam Logoby foggy » Tue Apr 29, 2014 4:18 pm

Please also review the knowledge base article mentioned above for possible reasons. If nothing helps, please open a support case for troubleshooting.
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Re: Cannot connect to the host's administrative share

Veeam Logoby jamerson » Tue Apr 29, 2014 9:15 pm

thank you guys
seems Win7 Admin share is not accessible , I tried all but can't get it to work,
I am rebuilding a new VM for this !
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Re: Cannot connect to the host's administrative share

Veeam Logoby v.Eremin » Wed Apr 30, 2014 6:59 am

Hi, Julien,

This is the root cause, indeed. What account you're using? Domain administrator? As mentioned in the adjacent thread, the VM might have some problems with domain authentication, so, it might be worth re-joining the said VMs to the domain.

Thanks.
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Re: Cannot connect to the host's administrative share

Veeam Logoby FrozenIT » Wed Oct 15, 2014 10:24 pm 2 people like this post

One other item to take a look at is the IP addressing on your network card. If you do something similar to what I did where I had two IP's (one for data, one for management network) on the same NIC you won't be able to get to the share and things will break. Throw another nic in the machine (if it's a VM then it's cake) and go that route. Just my $0.02.
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Re: Cannot connect to the host's administrative share

Veeam Logoby abhardwaj » Sun Oct 19, 2014 10:53 pm

Hi all,

I backup using the VIX API (and enable VSS - Application consistency feature), when I setup the Veeam jobs, I configure the following on the Guest O.S. and backup works :
Option 1 :

1) Disable the UAC (both via GUI and registry key : http://social.technet.microsoft.com/wik ... g-uac.aspx). A restart will be required on the VM once the registry value is changed.

2)Add backup account to the local admin group of the server(s) within computer management.

Option 2 :

Use Domain Administrator username and password (this account will have a SID value of 500) to setup your backup job.
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Re: Cannot connect to the host's administrative share

Veeam Logoby foggy » Mon Oct 20, 2014 10:46 am

Yes, either disabling UAC or using Domain Administrator account is required to perform application-aware image processing work over VIX.
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