Windows feature updates may remove support for old file shares

I recently updated a Windows 10 machine with the newest feature update. Afterward it was unable to open a folder shared from a Windows 95 VM. Opening the share produced an error about SMB 1.0 no longer being supported. Fortunately it is possible to reenable support for the old protocol by installing an optional component. In the Windows Features dialog (run optionalfeatures), enabling "SMB 1.0/CIFS File Sharing Support" or specifically "SMB 1.0/CIFS Client" made the share usable again.