Windows Server 2025 and Veeam B&R

Yeah, saw them announce this version of Windows Server last week.  Going to download and start doing some initial testing but good to hear that Veeam “works” on it.  😎

Nice! It is good to know that VBR12.1 works with Windows Server 2025. I mean, install successfully, at least. 😀

Think I’ll download and place in a VM and browse around a bit. Some previews I saw resembled Win 11 UI. Meh to that imo. 

Thanks for the info @dips 

Thank you for sharing @dips , interesting news and technical scout tests!

No worries. If I get more time, I will try and test and see what happens when taking backups. Will be interesting. 

Thanks for posting this.  I’ve heard that there’s new Hyper-V features, so I had considered setting up a 2025 Hyper-V server and seeing if Veeam will protect those VM’s out of the box.

One thing to note is that Veeam does not back up Windows 2025 when App Aware is enabled.  I have all my DCs upgraded to 2025 now to fix some odd things in AD but they are not being backed up via App Aware now.  Just a caveat for those testing.

Error you see is this which does not make sense either -

I tested installing the Transport service as noted but does not help.  Might need to make these Agent backups now to fix this.  😎

Just an FYI here - if you use Agent backups you can do App Aware processing for Win2025.  😉

Cool find, I’m just about to do some 2025 testing myself

Yeah mine have worked well since deploying the Windows agent since native backup throws that error I posted.

Have you encountered any problems while continuing to use it? @dips 

If you plan to use 2025 with VBR to back up servers then you need to look at the Agent for now for App Aware backups but if not you can use VBR.  Application aware does not work in VBR as noted by my post above due to unsupported OS currently.

Thank u for info Chris. I'm looking forward to using Veeam's future new features in WS2025 in the future.

I’ve not encountered any issues. As @Chris.Childerhose mentioned if you need App Aware, go with the Agent route. 
What’s your workload looking like?

Any issues using vbr 12.1 (our current win2022 based veeam server) to back up hyper-v *guests* that are running win2025 with refs volumes?  (the hosts are still win2022)

Windows Server 2025 is expected to be fully supported in the upcoming release v12.3 (Q4 2024). While it may work with v12.1/v12.2, I would still wait till end of this year with protecting production workloads on Win2005.

But you should consider an immediate update to v12.2.Your version v12.1 is affected by known security vulnerabilities which are already exploited by attackers. V12.2 must be installed to fix these vulnerabiltities.

Veeam Security Bulletin (September 2024):

https://www.veeam.com/kb4649

Ransomware operators exploited Veeam Backup & Replication flaw CVE-2024-40711 in recent attacks:

https://securityaffairs.com/169679/cyber-crime/ransomware-groups-exploit-veeam-backup-replication-bug.html

Best,

Fabian

Thanks Fabian - typo on my part - we are on 12.2 already.  Since we have a guest already on 2025 with an refs volume, can we expect any issues with veeam reading that volume?

You will have no issue as I have some Win2025 servers being backed up in my lab with no issues. But as mentioned full support in 12.3.

Thanks Chris!

We’ll need to install the Veeam Agent for Windows on the Win2025 VM and do backups using the agent, not vCenter VM backup,  to allow for Application Aware to work?  Is there an ETA when Win2025 will be recognized as a valid OS within VM/vCenter backups?

Support is planned for our upcoming release v12.3. ETA is expected till end of 2024.

Best,

Fabian

Amazing and veeam is more than Amazing and friendly will work with os25.