Internet Explorer - 500 internal server error, even on localhost
IE suddenly stops being able to connect to URL where plone server lives, even using localhost, IP and port#'s. (win32 2.0.5 stable, on XP sp2 with all the latest everythings, running a LAN cable connection)
Netscape and Firefox see the server just fine. The connection fails (timeout) or returns an http 500 error.
Google search on this turns up a LOT of similar incidents in about every server config you can imagine, even MS servers, and as many different solutions too.
Here is the one that worked, for me.
Solution: (in IE)
Tools >> Internet Options >> connections tab >> LAN settings >> uncheck the auto detect feature
You likely need to restart the browser, I did a full reboot to be certain.