So you migrate over 200 VMs from a previous version of Hyper-V to Windows Server 2012 R2 fully patched and life looks great, full of possibilities etc. However one thing get’s back to your e-mail inbox consistently: a couple of Windows Server 2003 R2 SP2 (x64) and Windows XP SP3 (x86) virtual machines. The VEEAM backups consistently fail. Digging into that the cause is pretty obvious … it tells you where to problem lies.
Ah they forgot the upgrade the IS components you might conclude. Let’s see if we try an upgrade. Yes they are offered and you run them … looks to be going well too. But then you’re greeted by "An error has occurred: One of the update processes returned error code 1603”.
Darn! Now you can go and do all kinds of stuff to find out what part of the integrations services are messed up as most day to day operations work fine (registry, explore, versions, security settings …) or be smart a leverage the power of PowerShell. It’s easy to find out what is not right via a simple commandlet Get-VMIntegrationService
We’ll that’s obvious. So how to fix this. I uninstalled the IS components, rebooted the VM, reinstalled the IS components … which requires another reboot. While the VM is rebooting you can take a peak at the integration services status with Get-VMIntegrationService
That’s it, all is well again and backups run just fine. Lessons learned here are that SCOM was completely happy with the bad situation … that isn’t good 
.
So there’s the solution for you but it’s kind of “omen” like that it happened to three Windows 2003 virtual machines (both x64 and x86). You really need to get off these obsolete operating systems. Staying will never improve things but I guarantee you they will get worse.
See you at a next blog 
I just ran into the same issue, but for me, I fixed it by restarting the “Hyper-V Volume Shadow Copy Requestor” service inside the VM. Your PowerShell script helped me out though!
I’m getting this same issue with a 2012 VM. I can’t uninstall the IS components – any ideas?
I logged this with Microsoft and they wrote of the server. We were advised to rebuild the VM 🙁
Sorry to hear that. If this doesn’t help, then that might be your only option. That’s why good backups & tested restores are important.
Thanks for the article. Resolved the very same issue I was having. Now I can do my final backup of my last 2003 VM then retire it.
That’s great. I’m glad it helped out and thank you for reading. Congrats on retiring your last W2K3 VM!
Got same error on 2003 vm ,
Hw uninstall IS components..m not able to see any thing related to IS in add remive progres.. also tired cmd setup.exe /unistall