Assessment Methodologies: Enumeration CTF 1

I am having an issue many have had with this lab and similar labs, the dreaded protocol negotiation failed error

I tried both fixes offered in this forum for /etc/samba/smb.conf
Add the following under global section of the file:

client min protocol = CORE

client max protocol = SMB3

and after that didnt work
Add the following under global section of the file:

client min protocol = CORE

client max protocol = SMB3_11

client use spnego = no

client ntlmv2 auth = no

Any suggestions? Starting to think signing up for this training was a huge waste of money if basic labs like this are unable to work without extensive troubleshooting.