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Backblaze won't backup Dropbox folder while files on disk are flagged as online-only
I noticed that Backblaze is not backing up my dropbox folder and after reaching out to backblaze support they've determined that files in my dropbox folder are assigned reparse points.
On dropbox p...
Thanks for following up, and great question, this definitely gets into some confusing Windows behavior, so let’s break it down:
Why your Dropbox folder shows as a reparse point
It's normal for the Dropbox folder to show as a reparse point only when Dropbox is installed and using the Microsoft Cloud Files sync engine.
Here’s what’s happening:
- When Dropbox is installed, it tells Windows to manage your Dropbox folder using the Cloud Files sync engine, which is how Windows enables features like showing files in File Explorer before they’re fully downloaded.
- As soon as this happens, Windows adds a reparse points to the files inside your Dropbox folder.
- If you uninstall Dropbox, that integration is removed, so Windows removes the reparse point too, and fsutil command shows nothing.
- Even if you mark all files as "Available Offline," Windows still keeps the reparse point on the folder, because it’s needed to manage file sync state behind the scenes.
Why some people say Backblaze works
- Some users may still be able to back up their Dropbox folder if they’re using on an older Dropbox version with the legacy sync engine.
- But once Dropbox is using Cloud Files API (which became mandatory for full compatibility with modern Windows versions), there’s no supported way to remove the reparse point without breaking sync.
Can you make Dropbox not use reparse points?
Unfortunately, no. There’s no supported way to prevent Dropbox from using reparse points on Windows. This behavior comes from Microsoft’s Cloud Files platform, and Dropbox uses it to deliver key functionality like online-only files, fast sync status, and better integration with Windows features.
What can you do to back up Dropbox files to Backblaze?
- Downgrade to a legacy version of Dropbox (Not recommended long term). Older versions of Dropbox didn’t Windows Cloud Files or reparse points. In theory, if you install one of those, your Dropbox folder should sync normally. It can potentially break on newer Windows versions or during OS/security updates. Cloud Files became a default sync engine for Dropbox, so eventually all users will be updated to use it and the solution will stop working.
- The best solution is to have Backblaze update their software to fully support backing up files from sync solutions like Dropbox that use Cloud Files.
Let us know if you have any other questions!
Thanks for that detailed explanation but it turns out that the issue is "Dropbox for Windows Updates". When I opted out of "Dropbox for Windows Updates" during installation, it seems to work fine!
The files in the dropbox folder are no longer being returned true when I check if it is a reparse point and I've confirmed that backblaze is backing them up. Sadly, I had already moved all my files to google drive by the time I found the fix. A similar issue was reported here and it's thanks to this user that I found this solution. - https://www.dropboxforum.com/discussions/101001016/all-files-in-my-dropbox-folder-have-the-reparse-attribute-with-system-extension-/837578
What does "Dropbox for Windows Updates" do? I only found the option to opt out of it during installation. Is that available in the settings somewhere? Is it possible to opt out of this after installation or is it only available during installation of dropbox?
Rich
Super User II
Super User IIIs that available in the settings somewhere? Is it possible to opt out of this after installation or is it only available during installation of dropbox?
No. The option to opt out of the update is only available during installation.
Keep in mind also that eventually you will be forced back on to the Dropbox for Windows Update as Microsoft has made it mandatory for any sync application to have full compatibility with the newer operating systems. Dropbox is slowly rolling out the update and it will eventually be required for Dropbox to run.
Oh ok. I hope backblaze finds some solution for this then!
- Mark
I use BackBlaze on a Mac and suspect there wont be a fix/workaround to it from conversations with support. Simply due to the fact there is lots of stuff they cannot backup.... ie the online only stuff - as it doesnt 'exist' locally without downloading it first.
