Hello Allan Findlay,
If your goal is to access shared folders without being prompted every time, the recommended approach is usually to save the credentials rather than disable authentication completely. On the client PC, you can select "Remember my credentials" when connecting to the share, or store them in Credential Manager under Windows Credentials.
If you specifically want anonymous access, you can disable Password Protected Sharing in Advanced sharing settings and ensure both the share permissions and NTFS permissions allow the required access. Keep in mind that some Windows 11 configurations and security policies may restrict guest access to SMB shares, especially in managed or business environments.
Are these PCs using local accounts, Microsoft accounts, or domain accounts? That will help determine the best approach. If this helps, please accept the answer.
Tracy Le.