DPP 4 always triggers OneDrive file download when Files On-Demand enabled.

[wezmag]

App:

• Canon Digital Photo Professional 4.10.20 for Windows
• OneDrive 19.103.0527.0003 (with Files On-Demand enabled)

OS: Windows 10

Symptom:

Whenever start DPP, it triggers files download in OneDrive.

It downloads every files, not just photos.

I tried to block DppMain.exe on OneDrive, it works only for a few minutes.

After changing folder, it starts download file again.

Due to the limit of disk space, I had to uninstall DPP.

Not sure if this is related to DPP or OneDrive.

I've also reported this issue to Microsoft.

Please work with Microsoft and fix the issue.

Thanks

[Tim]

wezmag, 

Based on your description of the issue, this is something within your OneDrive application.  There isn't any protocols built within DPP that should have a controlling effect on that application.  We recommend getting in touch with the manufacturer for further assistance. 

[wezmag]

Hi Tim,

Thanks for prompt reply.

I believe this is not only Microsoft's issue, but also Canon's.

Would you mind report this issue to your software team?

The issue is very easy to reproduce.

I think everyone who uses OneDrive (with File On-Demand enabled) and DPP will face the same issue.

Thanks

[shadowsports]

This is not a Canon software issue.  Its the result of how you have your One Drive configured. One Drive backs up what you tell it to.  DPP is a photo editing software.  It doesn't control storage, have any back up controls or functionality...  as Tim pointed out to you.  Further, Storage Sense (if enabled) can also change locally stored files to oniine only after a period of time.  I think you need to review your settings. 

[wezmag]

Hi Rick

Okay, thanks.

[Waddizzle]

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@wezmag wrote:

Hi Rick

Okay, thanks.

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Do you store photos in a folder that backed up by One Drive?  DPP likes to hunt for all media in the current folder and all sub folders.  It does not seem to keep track of where it has found media in the past, so every time it starts up it seems to look for media.

Do you have WMP, Windows Media Player?  If so, what is it’s startup folder?  If you do not use WMP, make its’ default startup folder one that does not contain media.  I point WMP and DPP to startup in an empty folder in my root directory.  

[wezmag · Accepted solution]

Hi Waddizzle,

Thanks for sharing your experience.

I tried to set startup folder in DPP, but it still try to read files not in startup folder.

Here is my workaround.

1. Find a larger Micro SD, and follow this tutorial How to Sync OneDrive to a Removable Micro SD Card in Windows 10

    * My laptop has only 128GB SSD, it's just not big enough. Sadly, it's non-upgrable

2. Select fewer folders to sync.

    * Because the Micro SD card is still not big enough, so I decided not to sync all folders. I only sync "Picture" folder.

3. Disable Files On-Demand in OneDrive.

    * Files On-Demand is a great feature, it just doesn't play well with DPP.

I think the ultimate solution is to get a Mac and use iCloud instead. 

For those who still want to use Files On-Demand, I am sorry, It just doesn't work. Not until Canon fixes the issue.

[wezmag]

I just found some information that might help.

https://www.petri.com/managing-onedrive-files-demand-windows-10-fall-creators-update

In this article, it says that OneDrive uses file attribute to implement Files On-Demand.

File with attribute "u" indicate that it's an online-only file.

I guess that when starting DPP, it scans every files and generates thumbnails which triggers file download.

If that's the case, DPP should check the file attribute first.

If the file has attribute "u", do not generate thumbnails.

Hope this bit of infomation helps.

Thanks