Beginning July 26, we need to deploy a security update to Google Drive that will change link addresses for all shared files, folders and drives in all Â鶹´«Ã½ Google accounts. Updates will be rolled out to users between July 26 and September 13. After the update, you'll get a notification from Google letting you know which of your files were impacted. If you previously shared links to any of those files, you'll want to reshare the new link.
(This update only affects access to files from a shared link. Shared files will continue to be accessible from the "Shared with me" tab in Google Drive.)