Failed to modify guest OS settings hyper-v

Hello @actualc,
just to make sure I have understood your scenario correct:

• you have backed up a physical Windows server with the Veeam Agentfor Windows and want to restore it as a VM with a VBR server?
• your Agent ran in standalone mode or controlled from the VBR server?

What I see is that your Veeam Agent for Windows is not on the last version (6.0.3).

hello @JMeixner ,
that's exactly it
my agent works in standalone mode

Did you try to boot the VM with the Veeam Recovery Media and restore the backup from there?

What version of Hyper-V is installed on the system you are restoring from?  Is the OS the same as the one backups up - Win2019?  That can cause issues from what I am reading here - Before You Begin - User Guide for Microsoft Hyper-V (veeam.com)

hello @Chris.Childerhose

both server versions are in 2019.
hyper-v version is 10.0.17763.1

hello @JMeixner 

I did a test restore from Veeam Recovery Media
it's OK, the restore is good

The only other thing I can think of is to check the logs here - C:\ProgramData\Veeam\Backup

Otherwise, you might need to use the recovery media for this restore or worse case open a Support ticket to get assistance.

hello @Chris.Childerhose 

thanks for you help

i look

Hi,

we have the same issue after an upgrade from Veeam B&R version 11 to 12 in December 2023.

With version 11 instant recovery worked fine. A full restore takes to much time and is no solution for us.

Any ideas?

Thx & rgds

Thank you for this info

no idea but the solution offers rapid recovery with instant recovery, that's why we chose this solution

I’m having the same issue after upgrading from 12.x to 12.1.  “Failed to modify guest OS settings”. 

Did you open a Support case to have them check things for you?

Hi,

i have same issue and forwarded it to the support:

i did a backup of a Windows Server 2016 and like to restore it via instant recovery from backup to a Hyper-V VM on a windows 10 pro computer. On windows computer all updates are up to date

Hyper-V Version 10.0.19041.1
Windows backup Agent Version : 6.1.0.349
Veeam Backup & Replication community version : 12.1.0.2131

below you can find the restore protokoll:
17.01.2024 18:04:52 Warning Restore failed 17.01.2024 18:04:55 Warning Eine Ausnahme vom Typ "System.ArgumentOutOfRangeException" wurde ausgelöst. Parametername: busType Der tatsächliche Wert war Unknown. 17.01.2024 18:04:55 Retry count: 3 17.01.2024 18:05:40 Restoring VM PLSV02... 17.01.2024 18:05:01 Disk E:\Hyper-V\Virtual Hard Disks\dddefdf4-a18b-4271-997c-32c31958f0d9.vhdx has been preallocated successfully 17.01.2024 18:05:10 Disk E:\Hyper-V\Virtual Hard Disks\25b9476b-2d4d-4d76-bac9-ff1e1892f8a8.vhdx has been preallocated successfully 17.01.2024 18:05:20 All VHDs were mounted successfully 17.01.2024 18:05:33 Error Failed to modify guest OS settings 17.01.2024 18:05:36 VM was removed successfully 17.01.2024 18:05:37 Preallocated disks were removed successfully 17.01.2024 18:05:37 Error Restore failed 17.01.2024 18:05:40 Error Eine Ausnahme vom Typ "System.ArgumentOutOfRangeException" wurde ausgelöst. Parametername: busType Der tatsächliche Wert war Unknown.

hello @Andreas Link 

have you received any feedback from support?

not yet when we solved it i will post the solution

Great, @Andreas Link ! 😀

• SureBackup jobs using Hyper-V-based virtual labs fail to process agent backups, displaying the error:

  Exception of type 'System.ArgumentOutOfRangeException' was thrown

Great to hear Andreas that this release fixed it.  👍🏼