Windows 10 Canon SMB, PC sends RST, ACK to a Negotiate Protocol Request

  • Thread starter Thread starter Stewjo
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Stewjo

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I set up a brand new Windows 10 PC on Friday for a client. The last thing I did before I left was set up a Canon iR-C350 and tested both printing and scanning. This morning it isn't working. I verified all of the credentials and shares and finally decided to break it down in Wireshark.

I see the scanner sends a Negotiate Protocol Request with a Requested Dialect of NT LM 0.12 which I believe is SMB1. So I turned on both SMB1 options in the Windows 10 optional features. Rather than send back a "Negotiate Protocol Response", the PC just sends back an "RST, ACK". The printer tries 3 more times and then just fails. I've disabled the firewall and all Webroot services. 1422425.jpg

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I hope this is enough information and I greatly appreciate any help. Thanks!

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