Since updating to 16.0.17, Clicking a PDF Link crashes the webview with Channel Disconnected.

This appears to be an issue trying to load a plugin for a PDF Viewer.

I have come up with a workaround for this issue until it can be properly addressed.

In the ShouldForceDownload event of the webview, add the following code (This is vb.net code, C# is almost identical, C++ will need a touch up.)

If e.MimeType = "application/pdf" Then
e.ForceDownload = True
End If

This will allow you to download the file similar to any other normal download.
Save the file where you want it.

In the webview downloadcompleted event, add something similar to the below.

If Path.GetExtension(e.Item.FullPath).tolower = ".pdf" Then
Process.Start(e.Item.FullPath)
End if

You will need "Imports System.IO" to use the path.getextension method.
If you prefere, you can do , Process.start("cmd /c start " & e.item.fullpath). Either way, this will load your default PDF Viewer.

To make this look like part of your app, if you have EO PDF, create you a pdf viewer form and load the download into it. I only use EO Webbrowser, so I have to shell out to the windows default PDF Viewer.

I hope this helps.