Localhost refused to connect .NET Core Web API
Question
when I am trying to launch my .Net Core WebApi project I receive System.Net.Sockets.SocketException No connection could be made because the target machine actively refused it 127.0.0.1:50620 error from Fiddler (in other words localhost refused to connect in browser).
I know there are thousands of questions about this issue but neither one of them managed to fix my problem.
What I did so far:
Played with hosts file of Windows - this seemed not to be the case.
Made another project that use same port - results were it builds with no problems so I concluded there no problems with this specific port.(Despite that I tried changing my port , but no success.)
Checked all my project/application settings files for any differences that might be causing the problem between the project I am failing to build and the one template project I am building successfully. - there are none drastic differences.
Turned off my firewall so I can check if firewall is the problem of this - project failed to build with firewall off.
Deleted temporary .NET files and assemblies related to the project.
Used netstat to see if someone is already listening to that port. - doesn't seem to be the case give the fact that I can build another project using the same port.
After one week of searching answers in internet and stackoverflow in general I am still stuck so I will be glad to use an extra hand to fix this.
If you need anything else as information for instance content of project.json file, applicationhost.json, etc. please write a comment and I will provide all the information I can in order to fix this.
1 answers
solution1
0 2016-12-17 14:46:25
This problem occures because you do not have a certificate for localhost.
You have to install a self signed certificate for localhost . Then you would only get ERR_INSECURE_RESPONSE which can be turned of in the browser settings.
To get rid of all errors you have to install a localhost certificate which has a trusted root authority.
Another option is explained here .
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