The File Extensions Database

.!SYNC File Extension

  • Developer by: BitTorrent
  • Category: Misc Files

What is an .!SYNC file?

.!SYNC is BitTorrent Partially Synced File

A !SYNC file is a partially synchronized file created by BitTorrent, a P2P file synchronization tool. It serves as a temporary placeholder for any file that was not downloaded and synced.

The !SYNC file extension is used to mark temporary files that are currently being downloaded or that are left partially received because of an interrupted synchronization. The extension is removed once the file is fully downloaded. If you remove files with the !SYNC extension before they are completed, BitTorrent Sync begins to transfer the file again.

Programs that open BitTorrent Partially Synced File
BitTorrent Sync
BitTorrent Sync
BitTorrent Sync

How to solve problems with !SYNC files

  • Associate the !SYNC file extension with the correct application. On :
    Windows: Right click on any !SYNC file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.!SYNC files". Mac: Right click (or Ctrl-click) the !SYNC file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .!SYNC is BitTorrent Partially Synced File. Because only the current version supports the latest !SYNC file format. Search, therefore, e.g. on the BitTorrent manufacturer website after an available .!SYNC is BitTorrent Partially Synced File update.
  • To make sure that your !SYNC file is not corrupted or virus-infected, get the file again and scan it with antivirus software.