In order to address security challenges posed by NTLM in our ever-changing digital world. Microsoft has decided to phase out NTLM in Windows 11 by default.

Some of you are already aware of this change! You can read more here: https://techcommunity.microsoft.com/t5/windows-it-pro-blog/the-evolution-of-windows-authentication/ba-p/3926848

I have also written an interesting piece on this topic on why NTLM is still lying around despite the security weakness and how Kerberos will remediate the need for NTLM: https://techdirectarchive.com/2023/10/15/bidding-farewell-to-ntlm-in-favour-of-kerberos/

You can also read some discussion points on the Veeam R&D Forum: https://forums.veeam.com/veeam-backup-replication-f2/veeam-servers-ntlm-disable-t71861.html

Kerberos is supported in Veeam Backup and Replication version 12  for all components of the backup infrastructure. You can read more here: https://helpcenter.veeam.com/docs/backup/vsphere/kerberos_authentication.html?ver=120