When Windows accesses the samba share, it prompts: "You cannot access this shared folder because your organization's security policy prevents unauthenticated guest access"

This problem needs to modify the Win10 network policy
Press window+R to enter gpedit.msc to start the local group policy editor, as follows:

Find the node "Computer Configuration-Administrative Templates-Network-Lanman Workstation" in turn, and you can see the "Enable insecure guest login" policy setting in the content area on the right. The status is "not configured", as follows:


Double-click the "Enable insecure guest logon" policy setting, modify its status to "Enabled" and click the OK button.

The setup is done as follows:

Try to access again and find that it can be accessed normally