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

Try it in IE compatibility mode by going into dev tools and selecting from the top drop down, if the error is still occurring with this on, chances are that it's some Windows system files that IE uses. Does this call use authentication with certificates? Maybe the certificate is out of date or Edge uses a different authentication method? Check your sources tab in IE (both compatible and non compatible) to see if the resource is being loaded, as Fiddler only captures HTTP and HTTPS traffic. That should point you in the right direction with regards to errors etc. Finally, maybe just code up a C# app that makes a request to the same URL, it's possible that the new version of .NET uses the same dependencies that could be breaking your call. If so, C# will give you enough of a descriptive error to fix the issue