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Event ID 30904: The server does not support multichannel

Windows Event ID Lookup: What Windows event IDs mean: 4625, 4624, 4740, 6008, 41, 7045, 1102 and 3,000 more, with Windows' own message text, the fields and what to check.

Look up a Windows event ID from Event Viewer, a SIEM alert or a log export: what it means, the fields it records, and what to check. Many IDs are used by more than one source (event 41 is both a Kernel-Power crash and a boot error), so every definition is shown, the one people usually mean first. The message text is Windows' own, read from the event providers of Windows 10.0.26200.0, 2026-10-28; the notes are ours, based on Microsoft's security auditing reference.

Try: 4625, 4624, 4740, 6008, 41, 1074, 7045, 1102, 4104, 1149

The server does not support multichannel.

Event 30904
SMBClient
SMBClient/Connectivity log
Information
Message and fields (as Event Viewer shows them) 
The server does not support multichannel.

Server name: …

Guidance:
The client attempted to use SMB Multichannel, but an administrator has disabled multichannel support on the server. This may also be a non-Microsoft file server that does not support multichannel or has multichannel disabled. You can enable SMB Multichannel on the server using this Windows PowerShell cmdlet: Set-SmbServerConfiguration -EnableMultiChannel:$true. This event does not apply to the multichannel settings of SMB client, which are controlled by the Set-SmbClientConfiguration Windows PowerShell cmdlet. Enabling or disabling client multichannel support does not affect server multichannel support.