Hello,
Because SMBv1 has major security vulnerabilities, SMB 1.0 is not installed by default on any version of Windows 11, but removing SMBv1 may cause some compatibility issues with older computers or software, so you need to install it manually. You can refer to the following link:
How to detect, enable and disable SMBv1, SMBv2, and SMBv3 in Windows | Microsoft Learn
Best Regards
Zunhui