I'm trying to install the "SMB 1.0/CIFS client" feature on an Azure based Windows Server 2019 VM but it can't find the source. Normally, on a physical server or a private VM, I'd mount the original ISO and browse to the "Sources\SxS" folder. However one never gets to "see" the install medium on an Azure provisioned server – I'm guessing it's cloned from a template.
I've got a copy of the Windows Server 2019 evaluation ISO – can I use that?
There is a similar question here but the answer is "try" so not certain and also the question was about W2012: Access Installation Disc from Azure-hosted Windows Server 2012 R2 VM
UPDATE: this doesn't appear to be a problem with source as mounting a Windows Server 2019 ISO doesn't help – there are not related files in the SXS folder.
Best Answer
Microsoft actively prevents the SMB v1 feature being enabled on Windows Server 2019 when running on the Azure platform for well documented security reasons.
I was trying to enable SMB v1 to diagnose why a QNAP NAS was unable to mount a share from Windows Server 2019 but could from Windows Server 2016. The reason is because this particular NAS is still using SMB v1 to mount remote shares and can't be reconfigured otherwise. Therefore this operation is impossible with W2019 in Azure.