hi I have a long queue of files waiting to sync again. The previous few days, i had the same problem, i posted the issue here(at above). After i sent some debug log to supporting, i disconnected the sync pair myself, then re-connect again. It can connected and completed the sync. After operation of one day, it comes the same situation now, the screenshots are same to above my attachement. I find that in my sync pair of computers: "A" computer said it is "synced", the "B" computer said it is "Sending (indexing)". If i modifyed any files at "B" computer, the history of "B" have corresponding update message. However, "A" computer seems no any notice to it, still in "synced", so do not start any sync process. At "A" computer, it has some other folders to sync to other devices, such as my Android mobile, they are syncing and no any problem. So the btsync deamon at "A" Computer is running normally. thanks yan