For what it's worth, I *think* I have the same bug. Recently set up a
home server with vanilla Ubuntu 23.10, up to date, using Samba
(currently samba:amd64 2:4.18.6+dfsg-1ubuntu2.1). To access the shares
from Windows 10 machines, for some reason I had to activate CIFS/SMB1.0
client functionality. On Ubuntu machines, also running up-to-date Ubuntu
23.10, Nautilus wants me to log into the server (before listing the
shares, even if guest login is enabled on Samba) but fails anyway, not
displaying shares.

I for one am glad I found @bloodyiron's workaround (killall gvfsd-smb-
browse) -- it does fix the issue, the shares instantly become visible
and accessible with guest/anonymous login. My previous workaround was to
ctrl-L to access the address bar and use smb://path_to_server/share to
access the shares using a GUI.

I get that the bug is originating from upstream. But on the other hand,
in my case, I set up Samba shares from the most recent Ubuntu release,
and cannot access it by default, using the default file browser of
another up-to-date Ubuntu install. I would have thought that this would
be a common use case, and hence rather important to fix one way or the
other.

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gvfs in Ubuntu.
https://bugs.launchpad.net/bugs/1828107

Title:
  gvfs can't list shares from smb servers that disabled SMB1

Status in gvfs:
  Fix Released
Status in gvfs package in Ubuntu:
  Triaged

Bug description:
  After bug #1778322 is fixed (just needs a gvfs rebuild with newer
  samba), samba machines will start to show up again in the "windows
  network" tab in nautilus. But if a server has disabled the SMB1
  protocol, nautilus will show an error when that server is clicked on,
  instead of showing the shares list.

  Even with SMB1 disabled, it should still be technically possible to
  get a share list, since smbclient can do it:

  andreas@nsnx:~$ nmblookup -A 192.168.122.101
  Looking up status of 192.168.122.101
        D-NO-SMB1       <00> -         B <ACTIVE> 
        D-NO-SMB1       <03> -         B <ACTIVE> 
        D-NO-SMB1       <20> -         B <ACTIVE> 
        ..__MSBROWSE__. <01> - <GROUP> B <ACTIVE> 
        WORKGROUP       <00> - <GROUP> B <ACTIVE> 
        WORKGROUP       <1d> -         B <ACTIVE> 
        WORKGROUP       <1e> - <GROUP> B <ACTIVE> 

          MAC Address = 00-00-00-00-00-00

  andreas@nsnx:~$ smbclient -L 192.168.122.101 -N
  WARNING: The "syslog" option is deprecated

        Sharename       Type      Comment
        ---------       ----      -------
        print$          Disk      Printer Drivers
        pub_no_smb1     Disk      
        IPC$            IPC       IPC Service (d-no-smb1 server (Samba, Ubuntu))
  Reconnecting with SMB1 for workgroup listing.
  protocol negotiation failed: NT_STATUS_INVALID_NETWORK_RESPONSE
  Failed to connect with SMB1 -- no workgroup available

  andreas@nsnx:~$ smbclient //192.168.122.101/pub_no_smb1 -U ubuntu%ubuntu -m 
NT1
  WARNING: The "syslog" option is deprecated
  protocol negotiation failed: NT_STATUS_INVALID_NETWORK_RESPONSE

  andreas@nsnx:~$ smbclient //192.168.122.101/pub_no_smb1 -U ubuntu%ubuntu -m 
SMB2
  WARNING: The "syslog" option is deprecated
  Try "help" to get a list of possible commands.
  smb: \> dir
    .                                   D        0  Fri May  3 18:16:38 2019
    ..                                  D        0  Fri May  3 18:15:24 2019
    hello.txt                           N       21  Fri May  3 18:16:12 2019
    hello-from-nsnx.txt                 A        9  Fri May  3 18:16:38 2019

                  20509264 blocks of size 1024. 13121800 blocks
  available

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