AddBehavior & navigateFrame

Hello everyone,

I have been facing an issue with "Open With Explorer" and well, restarting WebClient service helps sometimes, restarting my PC also helps sometimes, but that is totally not handy.

I have taken a very closer look to the JavaScript code that is called when I click "Open with Explorer". And I found that there is a function called NavigateHttpFolderCore() in the core.js file.

Inside that function there is the following:

httpFolderDiv = document.createElement("DIV");    
document.body.appendChild(httpFolderDiv);
httpFolderDiv.onreadystatechange = NavigateHttpFolderCore;        
httpFolderDiv.addBehavior("#default#httpFolder");
httpFolderDivTest.navigateFrame("htps://sharepoint.com/sites/site1/docLib", "_blank");

The code above is just an example and I would like to focus on:

• addBehavior (https://msdn.microsoft.com/en-us/library/ms535922(v=vs.85).aspx)

*httpFolder (https://msdn.microsoft.com/en-us/library/ms531419(v=vs.85).aspx)

• navigateFrame (https://msdn.microsoft.com/en-us/library/ms531397(v=vs.85).aspx)

Once I call addBehavior and parse #default#httpFolderI am able to call navigateFrame.

navigateFrame returns either "OK", if successful, meaning that the "Open With Explorer" will indeed Open in Windows Explorer, or it returns "FAILED" and the "Your client does not support..." will popup in my screen.

My question here is, why navigateFrame returns sometimes "OK" and sometimes "FAILED"?

And, am I able to "see" inside navigateFrame in order to understand the different return values?

Thank you