The File Extensions Database

.!QB File Extension

  • Developer by: qBittorrent
  • Category: Misc Files

What is an .!QB file?

.!QB is qBittorrent Partial Download File

Incomplete download file created by qBittorrent, a Torrent client; appends the ".!qB" extension to a file as it's being downloaded, and the extension is removed when the download is complete; similar to .!BT BitTorrent and .!UT uTorrent files.

NOTE: The !QB extension is only used if you check the "Append .!qB extension to incomplete files" option in the Downloads settings (Tools → Options and then select Downloads). The option is unchecked by default.

Programs that open qBittorrent Partial Download File

How to solve problems with !QB files

  • Associate the !QB file extension with the correct application. On :
    Windows: Right click on any !QB file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.!QB files". Mac: Right click (or Ctrl-click) the !QB 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 .!QB is qBittorrent Partial Download File. Because only the current version supports the latest !QB file format. Search, therefore, e.g. on the qBittorrent manufacturer website after an available .!QB is qBittorrent Partial Download File update.
  • To make sure that your !QB file is not corrupted or virus-infected, get the file again and scan it with antivirus software.