Hello Daniel Kaliel,
Greetings! Welcome to Microsoft Q&A Platform.
I understand that you’re encountering an issue with enabling SMB multichannel for your Azure storage account.
SMB Multichannel enables an SMB 3.x client to establish multiple network connections to an SMB file share. Azure Files supports SMB Multichannel on premium file shares (file shares in the FileStorage storage account kind) for Windows clients. On the service side, SMB Multichannel is disabled by default in Azure Files, but there's no additional cost for enabling it.
If it is Premium file share, then first make sure the binding for the NIC is set to true for SMB client (MS_client) and SMB server (MS_server).
The command below should show True under Enabled for both: Get-NetAdapterBinding -ComponentID ms_server,ms_msclient
After that, make sure the network interface is listed in the output of the following commands: Get-SmbServerNetworkInterface
Get-SmbClientNetworkInterface
If everything looks good there, check the firewall. Make sure SMB traffic is not blocked by firewall. If the network profile is set to Public. This means that SMB is blocked at the firewall by default.
The following article talks about how to troubleshoot SMB Multichannel issue, you could have a look: SMB Multichannel troubleshooting
Hope this answer helps! Please let us know if you have any further queries. I’m happy to assist you further.
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