smbd service not responding to traffic

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smbd service not responding to traffic

The smbd service appears to just stop responding to traffic after a period of time.

I have a Windows 11 laptop and a MacBook Pro laptop that access shared folders from a mac-mini nunning macOS Ventura. Normally this works fine. Packet analysis has shown that TCP traffic is being received by the mac-mini, but the smbd service just fails to respond. The smbd process is still listed in a `ps` list.

Restarting the smbd process resolves the problem temporarily. But it fails again anywhere from a few minutes later to a few later hours.

Any ideas what's causing this and how to prevent it?

Other specs:

Mac mini, M1, 2020

macOS Ventura 13.2.1.

The problem was the same before upgrading from macOS Monterey.

Mac mini

Posted on Mar 11, 2023 7:30 PM

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Answer 1

mikeg28806

Community Specialist

Mar 13, 2023 4:36 PM in response to Malkster

Thanks for posting in the Apple Support Communities Malkster,

If sharing your Mac mini works intermittently, the following guidance may be helpful:

Check your connection settings

Server Message Block (SMB) 3 is the default way to connect to a server in macOS. It requires the connection to perform a validate negotiate request after it authenticates. All SMB 3 sessions must be signed unless you connect as a guest or anonymously.

You might have a macOS file server that's an Open Directory client and is anonymously bound to a Lightweight Directory Access Protocol (LDAP) server. If so, use one of these methods to connect:

* When you connect to the LDAP server, use authenticated binding.

* Change the role of the file server to an Open Directory replica. This also sets up kerberos on your server.

* Disable validate negotiate requests on your client.

* Set up your SMB server or client to use only SMB 2.

You can find this information, along with additional guidance you may find helpful, here: If you can't mount SMB share hosted by a Mac bound to Open Directory

Take care!

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smbd service not responding to traffic

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