I installed bittorrent sync a month or 2 ago. It was working as advertised that whole time. I have a Mac running the latest OS X in Toronto and a Windows machine in Vancouver running god knows what version of Windows. They sync 1 directory and all its subdirectoies back and forth. I have the latest version of sync app (aka bit torrent sync) installed in Toronto. Presumably it is the latest version in Vancouver too, but my boss installed it, so I cannot say for sure. Suddenly, over the weekend, all syncing has stopped completely. No changes are synced in either direction. I have remote desktop login capabilities to the Vancouver network so I can change files here or there, but neither of those actions causes any sync activity anymore. My Bittorrent sync history shows when files are updated, added or removed locally here. It does not cause them to be synced across the Internet though. My logs look like this: [20131106 18:40:17.316] DEBUG: UPnP: Got an m-search event[20131106 18:40:17.340] Sending broadcast ping for share xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx[20131106 18:40:18.343] Sending broadcast ping for share xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx[20131106 18:40:19.347] Sending broadcast ping for share xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx[20131106 18:40:20.317] DEBUG: UPnP: Got an m-search event[20131106 18:40:20.350] Sending broadcast ping for share xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx[20131106 18:40:21.354] Sending broadcast ping for share xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx[20131106 18:40:22.356] Sending broadcast ping for share xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx[20131106 18:40:23.317] DEBUG: UPnP: Got an m-search event[20131106 18:40:23.359] Sending broadcast ping for share xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx[20131106 18:40:24.362] Sending broadcast ping for share xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx[20131106 18:40:25.366] Sending broadcast ping for share xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx[20131106 18:40:25.366] Requesting peers from server[20131106 18:40:25.390] Got list of 1 peers from 54.225.196.38:3000[20131106 18:40:26.327] DEBUG: UPnP: Got an m-search event[20131106 18:40:26.393] Sending broadcast ping for share xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx[20131106 18:40:27.396] Sending broadcast ping for share xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx (*I changed the share ID because I don’t know if that’s something that can be used to determine our secret, though I suspect not, or else it would be a really Bad Idea to print it in logs, because people would sooner or later copy/paste them online, but just in case…) and new entries are continuously being added at a rate of > 1 per second. 1) What can I do to troubleshoot? 2) Can I “reinstall” or something, without re-downloading the gigabytes of files that are already synced on both systems? 3) How can I fix it?