какой guest? в самбе с третьей версии запрещено использовать гостевой доступ.
$: samba-tool testparm --suppress-prompt
INFO 2021-07-02 23:52:28,195 pid:6624 /usr/lib/python3.9/site-packages/samba/netcmd/testparm.py #96: Loaded smb config files from /etc/samba/smb.conf
INFO 2021-07-02 23:52:28,196 pid:6624 /usr/lib/python3.9/site-packages/samba/netcmd/testparm.py #97: Loaded services file OK.
# Global parameters
[global]
disable spoolss = Yes
printcap name = /dev/null
catia:mappings = 0x22:0xa8,0x2a:0xa4,0x2f:0xf8,0x3a:0xf7,0x3c:0xab,0x3e:0xbb,0x3f:0xbf,0x5c:0xff,0x7c:0xa6
acl allow execute always = Yes
vfs objects = catia
[Public]
path = /home/alien/Общие
read only = No
[Home]
path = /home/alien
$: sudo pdbedit -L
alien:1000: