@Nicola Filosi Firstly, apologies for the delay in responding here and any inconvenience this issue may have caused.
Are you getting any error message? If so can you share the screen shot of the error?
Windows VM activation will require that you have defined outbound connectivity from the VM instance to the Windows Activation Key Management Service (KMS). See Troubleshoot Windows VM activation problems for more information.
If the issue still persist, . I wish to engage with you offline for a closer look and provide a quick and specialized assistance, please send an email with subject line “Attn:subm” to AzCommunity[at]Microsoft[dot]com referencing this thread and the Azure subscription ID, I will follow-up with you. Once again, apologies for any inconvenience with this issue.
Additional information : Troubleshooting Windows activation failures on Azure VMs:
Use Azure custom routes to enable KMS activation with forced tunneling:
Thanks for your patience and co-operation.
Please let us know if you have any further queries. I’m happy to assist you further.
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