SDM Express hangs on install to Cisco 857 Router

I have found that cisco GUI software to be somewhat picky as regards Browser settings.

I now don't try to use it at all. I have spent too long looking at houglass icons and don't bother with it.

I think that CCO has a document that lists all of the special browser settings required.

You could try removing all security, enabling all scripting.

Or alternatively become a browser securty expert and figure out the minimum that you need.

Start with making the router a trusted site.

I've had problems with SDM but not with SDM Express. SDM only works with older versions of the Java Runtime Environment.

You might check what version of Java you are using.

If you open the Java Console, you might see if SDM Express is producing java error messages. This would at least indicate that the problem is with SDM Express and not in the router.