Canon Digital Photo Professional (DPP) Neural Network subscription not starting

[CannonMike2026]

I'm using DPP 4.21.10.0 (freshly installed) and downloaded the neural networking tool 1.5.10 (latest with fresh install) - The app approved the computer&GPU and I subscribed to the monthly service and got the subscription email - I log on and it shows the subscription is active but when I attempt to use it, it is a loop telling me to restart the app and it will use the active subscription but never does. I tried reinstalling everything and even re-subscribing and I get the same error. I tried all things I could find on the web to get around the issue but no luck.

Any ideas? I couldn't find an appropriate Cannon support site for the product to ask this question so if that is available that will work and I can work with them.

[jrhoffman75]

You could try calling 1-800-OK-CANON.

[ebiggs1]

Two things make sure you have Inet access and your subscription is active. Secondly it requires a pretty high end computer to run make sure yours has the capability (I think Intel Core i7 or better.)

[loco_locust]

I've just registered here to reply to this thread. I encountered the exact same issue on MacOS Sequoia 15.7.2 (M4 Pro) and couldn't find any information, except for this thread. Would be great, if anybody could help.

When starting the Neural Network Image Processing Tool in DPP, it says (translated from my OS language) "Authentication became invalid. Click again on 'Use the functions of the subscribed plan' to update authentication information." Then, CSA Tool opens. When I click on that 'Use the functions..." button, the Safari browser opens and a new message box appears, stating "Restart the app. If the subscribed plan is active, this function is available." This is now the fifth day of trial-and-error and nothing has changed. Logging into my Canon account, I can confirm that my subscription has been running for four days now. It's the free trial of the monthly plan (first month for free).

Moreover, I GPT'ed around and tried to grant DPP full-access in the security settings, disable iCloud Private Relay, start all apps with Rosetta (right click on app - information - start with Rosetta) and made sure any Firewall is deactivated in order to make it work, but it doesn't. Not sure if something is preventing CSA Tool from connecting to the license server?

[loco_locust]

Adding to my former reply, I am wondering if the issue might originate from the app itself (@Canon devs). As far as I understand, there might a duplicate class error in the executables preventing from license validation?

If I right-click on the Neural Processing Tool in the "Canon Utilities" folder to show the contents of the app, and then run the executable '/Applications/Canon Utilities/Neural network Image Processing Tool/Neural network Image Processing Tool.app/Contents/MacOS/Neural network Image Processing Tool', Terminal shows me the following output:

/Applications/Canon\ Utilities/Neural\ network\ Image\ Processing\ Tool/Neural\ network\ Image\ Processing\ Tool.app/Contents/MacOS/Neural\ network\ Image\ Processing\ Tool ; exit;

objc[3067]: Class DAPEOSLensRegistrationToolController is implemented in both /Applications/Canon Utilities/Neural network Image Processing Tool/Neural network Image Processing Tool.app/Contents/Frameworks/DppCommonFramework.framework/Versions/A/DppCommonFramework (0x102e84178) and /Applications/Canon Utilities/Neural network Image Processing Tool/Neural network Image Processing Tool.app/Contents/MacOS/Neural network Image Processing Tool (0x1027a1e00). This may cause spurious casting failures and mysterious crashes. One of the duplicates must be removed or renamed.

objc[3067]: Class CSAToolUtility is implemented in both /Applications/Canon Utilities/Neural network Image Processing Tool/Neural network Image Processing Tool.app/Contents/Frameworks/DppCommonFramework.framework/Versions/A/DppCommonFramework (0x102e82dc8) and /Applications/Canon Utilities/Neural network Image Processing Tool/Neural network Image Processing Tool.app/Contents/MacOS/Neural network Image Processing Tool (0x1027a1ef0). This may cause spurious casting failures and mysterious crashes. One of the duplicates must be removed or renamed.

[jrhoffman75]

It works properly with my MacBook Air M2 with Tahoe, so I suspect it is not something inherent with the app.

[Waddizzle]

It is a best practice to restart your computer after installing a new program. 

[loco_locust]

Hi John, thank you for your helpful addition. Unfortunately, I'm getting the same error on my M1 Air (Sonoma). Not sure if it's undefined behaviour, layer 8 or on the license server's end... I'll give Tahoe a try later today - perhaps after completely wiping the hard-drive - and install DPP + neural processing tool on my Windows machine. I'll post here upon progress.

Have a great day y'all.

[loco_locust]

Nevermind: I got the wrong license (Image Upscaling instead of Neural Processing). Just found out when cancelling the free trial and re-subscribing to Image Upscaling + Neural Processing in addition.