SMB V1 is not considered secure, so it has been removed in Windows by default. You can re-enable SMB V1 it by installing the Windows feature Simple 1.0/CIFS File Sharing Support, but this is not recommended:

Samba36 actually supports SMB V2, as does Samba4 which also supports SMB V3. I only have Samba36 installed on my routers for SMB V2.

I do not work for and I do not have formal association with GL.iNet