Postman can't reach localhost

I was having similar issue with HTTP calls to local ASP.NET Core Web API apps. Changing the proxy settings didn't fix it for me.

Finally fixed it by turning off File > Settings > General > SSL Certificate Verification

Hope that helps someone out there.

I have the same issue. What works for me is:

Open File -> Settings -> Proxy

Then, enable proxy and put 127.0.0.1 : 80, if your web server runs on 80.

In the git thread, they say it is a known issue, so hopefully it will get resolved soon.

I solved this by Turning off System proxy of Postman.

Open File -> Settings -> Proxy

Then Turn off Use System Proxy