Windows 7 defaults to SMB2.
https://learn.microsoft.com/en-us/windows-server/storage/file-server/troubleshoot/detect-enable-and-disable-smbv1-v2-v3
Shouldn't be a problem though I'd recommend the extended security updates for Windows 7/ 2008 members.
https://www.microsoft.com/en-us/windows-server/extended-security-updates
--please don't forget to Accept as answer if the reply is helpful--