Edge on Windows 10 32-Bit blocking ajax call to localhost with Network Error 0x2efd

Question

We have an app that uses SignalR to talk to scanner drivers locally that has been in production for a couple of years working on IE, Chrome and Firefox, which do not have a prob

Answer 1

I had similar problem with Edge. The fix needed changes in ajax call and server running at localhost.

In ajax call I had to change from old text/plain to application/json

contentType: 'application/json; charset=utf-8',

Local server was using Jersey so there I added ContainerResponseFilter implementation that adds Access-Control-Allow-Headers and Access-Control-Allow-Methods headers. Access-Control-Allow-Origin was in place already.

res.getHeaders().add("Access-Control-Allow-Headers", "origin, content-type, accept, authorization");
res.getHeaders().add("Access-Control-Allow-Methods", "POST, GET, OPTIONS");