20,212 questions
You can follow along here.
https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/remove-administrative-shares#let-me-fix-it-myself
More info on hardening can be found here.
https://download.microsoft.com/download/5/8/5/585DF9E9-D3D6-410A-8B51-81C7FC9A727C/Windows_Server_2016_Security_Guide_EN_US.pdf
--please don't forget to upvote
and Accept as answer
if the reply is helpful--