Issue

When attempting to Add, Edit or Display a SharePoint List Item; a HTTP error 404 appears. This issue was only specific to a certain list of this site; other lists/libraries of the same site are working corrrectly.

Symptoms

The following URL was failing:

https://portal.denallix.com/K2Pages/DispForm.aspx?targetUrl=https://k2.something.denallix.com/Runtime/Runtime/Form/Displayportal__denallix__com__Lists__TaskListItemForm?UIV=15&List=b97817fe-9d91-4794-b474-9308c3d77b5b&ID=1&Source=https://portal.denallix.com/Lists/TaskList/AllItems.aspx&ContentTypeId=0x0100808CE92F31FC374485AAEF8B14713E5F&RootFolder=/Lists/TaskList

It was determined that the correct URL to this form should be:

https://k2.denallix.com/Runtime/Runtime/Form/Displayportal__denallix__com__Lists__TaskListItemForm

The binding for the K2 Runtime site URL was pointed toward an older binding which was no longer valid (K2.something.denallix.com); instead of the currently valid one (k2.denallix.com).

The value in the hidden 'K2 Settings' list for this site is correct.

Resolution

To resolve this issue, navigate to [K2 Application > Settings > Form Settings] for this list and perform the 'Save' option. This will update the appropriate URLs to the currently correct bindings.

Image