Meaning on the timserver device the localrepos folder is showing as up-to-date, right? That means sync is all right but this device has incorrect information about the state of the other device. Resetting the index will probably help. If you want to help us find the cause, query the /rest/db/file endpoint on the file in question on both devices. See https://docs.syncthing.net/rest/db-file-get.html and this post and following ones for infos Other hosts all at "Syncing (95%, 0 B) No guarantees that it will help though, all previous samples were completely mysterious. If there is anything particular about that file and how you share it, please let us know - maybe something rings a bell.