Hello Gavin,

There was an issue with our FTP server, it should now be resolved.

Please retry the download.

Best,

Jackson

From: Cui, Qiming <Gavin.Cui@ucsf.edu>
Date: Monday, February 2, 2026 at 2:39 PM
To: freesurfer@nmr.mgh.harvard.edu <freesurfer@nmr.mgh.harvard.edu>
Subject: [Freesurfer] Issue accessing WMH-Synthseg required files

        External Email - Use Caution        

Dear Freesurfer team,

I am trying to use mri_WMHSynthseg for white matter hyperintensity segmentation. I have installed the latest dev version, and I understand I need to download an atlas file from " https://ftp.nmr.mgh.harvard.edu/pub/dist/lcnpublic/dist/Histo_Atlas_Iglesias_2023/atlas.zip". However, I get a 404 error when I try to access this url. Upon examining the server, I see that https://ftp.nmr.mgh.harvard.edu/pub/dist/lcnpublic/ is empty. Could you help me gain access to this atlas file? Thank you.

Best,

Gavin Cui