OK. After applying all security updates on a Win 2000 box with the browser plug-in already installed, the behaviour of the browser did, in fact, change. Before the updates, a local NWC file could be drag and dropped onto the browser, and the file would appear in the browser using the NWC plug-in.
After the update, attempts to drag and drop a local NWC file onto an IE browser window:
- first, issues a warning about the safety of opening files
- then, opens the NWC file using the default Shell Open association, which in my case was setup to open in NWC
It appears as though, after applying the update, IE refuses to open a local copy of an NWC file in the browser using the plug-in.
However, on the thought that Microsoft may have messed up the registry somewhere during the security update, I then did the following:
- I uninstalled NWC, NWP, and the browser plug-in
- I rebooted the machine (this is very important)
- I used regedit to make sure that all traces of the NWC file associations were gone (in my case, they were, but if you manually made some of your own, your case might differ)
- I installed the latest copy of the NWC browser plug-in from our web site
Now, I can successfully drag and drop local NWC files onto an open IE browser window and they appear in the browser, using the NWC browser plug-in.