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HomeHomeUsing DNN Platf...Using DNN Platf...Administration ...Administration ...DNN 6 to DNN 8.0.4  API 404 (Not found)DNN 6 to DNN 8.0.4 API 404 (Not found)
New Post
5/19/2017 9:19 PM


I hope I am in the right place. We have quite a few clients in which we had upgraded them from DNN 6 to DNN 8. However we are now having issues with a few of them being unable to add new/existing modules or edit the pages. It results in https://website.local/folder/DesktopModules/internalservices/API/controlbar/ToggleUserMode 404 (Not Found) and refreshes the page.

From googling, we had hoped that changing the controlpanel from ControlBar to Ribbonbar would workaround the issue as we had found it had fixed someone else's issue previously but unfortunately when it comes to actually changing the page it brings up the same error.

We have also tried <modules runAllManagedModulesForAllRequests="true"> it only hid the error. 

The event log does not provide any information.

Any assistance on where I can look next is greatly appreciated.

New Post
5/23/2017 7:10 PM
When you did the upgrade from DNN 6 to DNN 8, did you follow the suggested upgrade path (see the Wiki)?

If not (or you aren't sure), it might make sense to take one of those DNN 6 installs (assuming that you have a backup), install it somewhere and try the upgrade using the suggested path.

You could also go through the logs on an upgraded site an check for errors that might have been missed during the upgrade.

Joe Craig
Patapsco Research Group, Ellicott City, MD
DotNetNuke Development and Services (
New Post
5/23/2017 11:29 PM

We did do the suggested upgrade path and we do have backups.

I did check the files on the site in the mean time. Well, actually I replaced all but web.config from an fresh/blank upgrade. No changes.

Will go through restore and re-upgrade tomorrow, it is possible I missed something, I'll provide an update with the results and any install logs errors I find.


New Post
5/25/2017 5:53 PM

Looks like I had caching issues.

Just for the benefit of the doubt I retried <modules runAllManagedModulesForAllRequests="true"> and cleared the cache and restarted the application. 

That was the fix.


HomeHomeUsing DNN Platf...Using DNN Platf...Administration ...Administration ...DNN 6 to DNN 8.0.4  API 404 (Not found)DNN 6 to DNN 8.0.4 API 404 (Not found)

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