Saving this here, because the site where I used to personally access this data (technocreativo.com) when needed appears to have gone online. Fortunately, I found a copy on the Internet Archive and was able to extract all the necessary info from it.
While Apple has eliminated a number of features from their macOS Server software over the years, there are still a number of instances where using a Mac as a file server in a Windows-friendly environment is necessary. Unfortunately, those using a Windows computer to connect to the Mac file server often face connection issues due to some out-of-the-box security and communication incompatibilities between the two systems.
If you need to get a Windows computer connected to a Mac file server quickly, these tweaks below will solve the problem.
Press the Windows key and “R” together on the keyboard and enter secpol.msc in the run dialogue.
Navigate to Security Settings / Local Policies / Security Options.
Find Network Security: LAN Manager Authentication Level, and set it to Send NTLMv2 response only.
Finally, ensure that Network Security: Minimum session security for NTLM SSP Based (including secure RPC) Clients is set to Require 128-bit encryption.
You may need to restart your computer for these changes to take effect, but once they do, you should have no trouble connecting to your Mac server from Windows 10.