FAQs - Frequently asked questions

SyncFolder in short

SyncFolder is deliberately kept simple and does not pretend to be a total solution for all synchronization and backup tasks. It is primarily intended for home use.

Key factors:

  • Installation and update of the app is easy and secure by means of the Windows Store.
  • The app allows you to copy one or more source folders to a target storage device. Copying happens in 1 direction.
  • Possible data storage devices are:
    • A hard drive of the computer
    • An external USB storage device: USB sticks, USB hard drives or SSD drives
    • A network storage station: a shared network drive
    • A cloud storage location: OneDrive, DropBox, ..
  • All synchronization jobs can run automatically at a configured time or can be started manually.
  • Copying happens incrementaly: only those folders and files are copied that are new or have changed since the last backup. Modified files are copied fully and thus replace a previous version, i.e no history is kept.
  • The app allows you to include or exclude hidden folders.
  • You can copy in 2 ways:
    • By mirroring - This method ensures that the folders and files on the storage medium are an exact copy of those on the source. If files disappear on the source location, they also disappear on the target location.
    • By copying blind - This method also copies all new and changed files, but files that are no longer present at the source location are not deleted on the target medium.

SyncFolder versus other synchronisation/backup apps

Because the app is initially intended for home users, many features which other apps have are missing. User-friendliness and the simple configuration are central and ensure that everyone can make copies of his or her important files without problems.

If you want more options such as backup history, encryption of files, backup on remote computers, 2-way synchronization, etc., then commercial tools and apps are probably better suited.


Import photos and videos from memory cards and devices connected through USB

When installing SyncFolder the app automatically creates the task Import job for photos and videos. This task can not be removed. You can start the task in 2 ways:

  • Manually - Click on the "Import" button on the start page or on the "Execute now" button of the task in the tasks list.
    Make sure the memory card is plugged in or your camera, smartphone or tablet is connected using a USB cable. Then, select the card or the device.
  • Via the Autoplay/wizard option in Windows - Connect the device using a USB cable and select "Import photos and videos (SyncFolder)" in the pop-up window.

The app then scans the memory card or the device and shows all the photos and videos that it finds.
If you already have uploaded files previously, then only the new files are shown by default. To view all files, click the "All" button.

Select the items you want to import and choose "Copy selected" or "Copy selected to". With the first option, the selected files are placed in the folder that is configured for the task. The default folder for this is the Pictures folder. With the second option, you can copy the files to a specific subfolder within the configured folder.

The default storage folder can be set to any folder on your computer by opening the task's configuration window.

As an option you can also delete the selected photos and videos on the source device after they have been copied to the computer.


Importing photos and videos from mobile devices via WiFi

To use this feature you must install the SyncFolder Photos app (currently only available on Android, see Play Store).

On your computer:

  • Start the SyncFolder app.
  • Wait for a connection request from your mobile device.
  • Accept the device.

On your mobile device:

  • Start the SyncFolder Photos app.
  • Choose the desired group/folder. Then select the items you want to export to your Computer. A single tap selects the underlying item; a double tap selects all items between the new item and a possibly higher selected item.
  • Click the Export button in the upper right corner of the screen.
  • Wait until your computer is displayed on the screen and select it.
    Possible reasons why your computer would not appear:
    • You didn't start the SyncFolder app.
    • You didn't select your mobile device on the computer.
    • Your computer and mobile device are not connected to the same WiFi network.
    • Your WiFi network doesn't support automatic discovery of computers via multicast and/or broadcast.
    In the latter case, you can still connect to the computer via WiFi by scanning the QR code on the home page of the SyncFolder app.
  • After selecting the computer you will see all the subfolders that are available on the computer's target folder (the one that has been configured for Import job for photos and videos).
    Then, choose the folder where you want to copy the files to. If you want, you can even first create a new subfolder on your computer from within the mobile device's app.
  • Then, wait until all selected files have been copied.


Network disks

SyncFolder allows you to assign a netwerk disk both as source and target storage medium. After restarting the computer the disk letter (Y :, Z: ..) for this type of storage medium is not always immediately reassigned by Windows. SyncFolder will therefore not allow you to specify the storage folder using the disk name/letter. You will have to provide a full network name / folder by going through the Network section that you find at the bottom left side of the 'Select folder' window.

If the network drive is not shown in the Network section and the drive is a shared drive on another Windows 10 computer then it might be necessary that you have to start Function Discovery Resource Publication service on that computer.
Do this by starting the program 'services.msc' on that computer. How? Type Windows Key + R, then type services.msc, and press Enter. Then change the startup type of this service to 'Automatically delayed'. Finally, right click on the service and start them up yourself.

If the above doesn't work or the computer/NAS with the network disk doesn't support the way Windows expects name publication to happen, then you can try to type the name (e.g. \\DiskStation) in the top textbox of the 'Select folder' window.


Log files

You can enable detailed logging in SyncFolder by opening the Settings view. Use this feature when you are confronted with unexplainable errors and want to contact SyncFolder support for this.
If you want to do that, send an e-mail to info@cwwonline.be describing your problem and include in the attachment a copy of the log file of the service that is responsible for copying/syncing. The name of that file is: SyncFolderWin32Task.log

You can find al the log files by opening the Settings view and clicking the 'Show files in Explorer' button.


Error messages in SyncFolder

You can monitor the status and progress of a backup job in SyncFolder in a number of screens.

  • Start screen - Each time SyncFolder is busy executing a job a message is shown to indicate this. The message disappears when the job has finished.
    When a job has failed an error message will appear which remains on the screen until the error has been corrected.
  • Tasks list screen - For each of the registered tasks you can see the result of the last executed backup.
  • Task status screen - This screen shows more details about the status and outcome of the last backup. You can open this screen by selecting the task and then press the "Show status" button.
    The 'Faults' section lists all the errors that came up when executing the backup.

Common errors

Target station is not available
Make sure that the configured storage device (e.g. USB flashdrive, SSD, ...) is plugged in.
Error 0x80070079: The semaphore timeout period has expired
This error can occur when very large files need to be copied to a network drive or a USB device. Possible causes: bad connection with your storage device, errors on your device, outdated USB driver, etc. This error may prevent SyncFolder from copying any other files.
Action: Check your storage device carefully! If the error persists then the possible conclusion is that your storage device is probably severely damaged. The only option left is to reformat the device (ideally in NTFS format).
Error 0x80004003: Object reference not set to an instance of an object
It is currently unclear what causes this error. In most cases the error disappears after you remove and re-insert the USB device. If that doesn't work you might have to restart the computer.