'localhost refused to connect Error in visual studio

I have copied my solution file from another system and tried to run it on my machine: For this, I have gone to the project folder and deleted the previous solution file and copied the new one.

Now, it started giving me error. connection refused etc. So, I got one solution from here: How to solve ERR_CONNECTION_REFUSED when trying to connect to localhost running IISExpress - Error 502 (Cannot debug from Visual Studio)?

According to it, I changed the port number from 1049 to 1052. It loaded and one of the pages gets loaded. But when I entered the desired login credentials then it redirected to the older port again, like this:

http://localhost:1049/Home/SearchFlight

and the error is:

 This site can’t be reached

 localhost refused to connect.
 Search Google for localhost 1049 Home Search Flight
 ERR_CONNECTION_REFUSED

Now, I don't know what to do from here. I have changed the port number to 1052 but still its pointing to 1049. What should i do now?

Solution 1:^[1]

I had a similar issue. Try this and it should work

Go to your project folder and open the .vs folder (keep your check hidden item-box checked as this folder may be hidden sometimes)
In the .vs folder open the config folder
See that applicationhost.config file there? Delete that thing. (Do not worry it will regenerate automatically once you recompile the project.)

Solution 2:^[2]

Usually on local machine we are getting errors like This site can't be reached localhost refused to connect because we have self signed certificate configuration broken for local IIS Express. Sometimes it happens when you change URLs in launchSettings.json or never configured self signed certificates on this machine at all.

To fix self-signed certificate on the local machine you need to:

Delete .vs folder (requires to close Visual Studio 2017)
Run these commands in cmd As Administrator:

cd "C:\Program Files (x86)\IIS Express"

IisExpressAdminCmd.exe setupsslUrl -url:https://localhost:12345/ -UseSelfSigned
Make sure you run VS2017 As Administrator and check if the issue addressed

Note: https://localhost:12345/ is what is in your launchSettings.json for HTTPS

Solution 3:^[3]

Changing port number has resolved the issue

Solution 4:^[4]

Just Delete the (obj)Object folder in project folder then Run the application then It will work fine. Steps:

Right Click on the project folder then select "Open folder in file Explorer".
Then Find the Obj folder and Delete that.
Run the Application.

Solution 5:^[5]

Unfortunately, none of these answers worked for me. This answer finally did for Chrome only. Unfortunately, you have to do it each time:

Open this in your browser: chrome://net-internals/#hsts
Go to Delete domain security policies
Enter "localhost"
Restart browser

Google Chrome redirecting localhost to https

Solution 6:^[6]

I had the same problem. Deleting .vs folder (including all contents, folder might be hidden) worked for me.

Solution 7:^[7]

I solved a similar problem by listing bound IP addresses in a cmd window running as admin:

netsh http show iplisten

Then, one by one, blowing them all away:

netsh http delete iplisten ipaddress=127.0.0.200
netsh http delete iplisten ipaddress=127.0.0.2
...

Solution 8:^[8]

I ran my Visual Studio as "Run as administrator" and this solved my problem.

Solution 9:^[9]

If found it was because I had been messing about with netsh http add commands to get IIS Express visible remotely.

The symptoms were:

the site would fail to connect in a browser
the site would fail to start (right click IIS Express in the Taskbar and it was missing)
if I ran Visual Studio as admin it would start in IIS Express and be visible in the browser

The solution was to list all bound sites:

netsh http show urlacl

then delete the one I had recently added:

netsh http delete urlacl url=http://*:54321/

In addition I had removed localhost from the hidden solution folder file .vs\config\application.config for the site:

<bindings>
    <binding protocol="http" bindingInformation="*:54321:" />
</bindings>

so had to put that back:

<bindings>
    <binding protocol="http" bindingInformation="*:54321:localhost" />
</bindings>

Solution 10:^[10]

In my case, I need to update "publishAllPorts" = false in .Net 5 MVC project's launchSettings.json.

 "Docker": {
      "commandName": "Docker",
      "launchBrowser": true,
      "launchUrl": "{Scheme}://{ServiceHost}:{ServicePort}",
      "publishAllPorts": false
    }

Solution 11:^[11]

This happened to me in VS2017 v 15.6.7 using .net core 2.0.

When the project first launched it created an SSL Cert for localhost and started fine. When I disabled SSL I kept getting this issue.

Apparently when you disable SSL the port numbers are changed and not all of the port numbers get changed to the new port. Make sure port numbers on Debug are all the same number.

Solution 12:^[12]

I was having this issue and solved it by closing all open instances of Visual Studio.

Solution 13:^[13]

Go to control panel > Programs and feature > IISExpress > Repair

Solution 14:^[14]

Open cmd as administrator and run this command:

netsh http delete iplisten ipaddress=xxx.xxx.x.xxx

ipaddress is your private ip.
This worked for me.

Solution 15:^[15]

For this to work for me, all I had to do was recreate the virtual directory. I had re-installed Windows and then pulled the project back out of Git. To do this, right-click on the solution project and choose Properties, then go to the Web tab and click the Create Virtual Directory beside the Project Url.

I hope this helps someone else too!

Bud

Solution 16:^[16]

Project properties> Web > Create Virtual Directory worked for me

Solution 17:^[17]

Right Click on Project >> Properties >> Select Web Tab >> Under server Select "Use Visual development server" so indirectly it will uncheck "Local IIS Server"

Hope so it may resolve this issue.

Solution 18:^[18]

Change the port number and remove script debugging (if enabled) to resolve in localhost.

Solution 19:^[19]

I've tried everything but nothing worked, but this did. If you can debug on local IIS instead of Express, change the configurations as shown in the image below. Do not forget to click on "Create virtual directory"

Solution 20:^[20]

rebooting the machine was the only thing that worked for me

Solution 21:^[21]

I recently ran into this exact problem and tried most of the suggestions but it turns out my problem was something different.

Our application has a section that redirects you to HTTPS if you are on HTTP (yes, I know there are better ways but this is legacy). In addition, there is special handling of localhost when you are in dev mode which redirected you back to HTTP, though I don't know why.

I have a new requirement that requires testing in HTTPS.

On a normal web page, changing http:// to https:// and calling Redirect would work fine but in IISExpress you are using custom ports. So for example, if you are on https://localhost:44300 you can't just switch to http://localhost:44300 b/c that port only serves https, not http.

So, if you are having this problem and you've cleared the config files and it didn't help, check your code for redirects. you might have something using a hardcoded or partially hardcoded url or a url from a config file that you haven't updated to https.

Update: I also suggest clearing all .suo and .user files and someone else suggested clearing the obj/ folder. I suggest doing this with VS closed and then restarting. I had a lot of trouble with values for ports being cached when i tried to setup https:// and change ports. I also suggest trying this suggestion to check that the SSL port is within the correct range, though I don't know if that is still a requirement https://stackoverflow.com/a/24957146

Solution 22:^[22]

In my case, Visual Studio 2017 > Tools > Options

In Debugging menu in the side list find Edit and Continue

Uncheck the Enable Edit and Continue check box

This resolves my problem.

Solution 23:^[23]

Same problem here but I think mine was due to installing the latest version of Visual Studio and having both 2015 and 2019 versions running the solution. I deleted the whole .vs folder and restarted Visual Studio and it worked.

I think the issue is that there are multiple configurations for each version of Visual Studio in the .vs folder and it seems to screw it up.

Solution 24:^[24]

Sometimes https and http ports can be same because if two tags are given same ports IISExpressSSLPort and DevelopmentServerPort Make sure these two ports have different ports then in IISUrl use your default port either HTTP or HTTPS

https://localhost:44365

For HTTPS Use IISExpressSSLPort
For HTTP Use DevelopmentServerPort

Then you may delete hidden .vs folder in solution folder

Solution 25:^[25]

Try deleting cookies for your localhost

Solution 26:^[26]

My problem turned out to be a property which called itself:

Once I fixed this, the misleading connection error message disappeared.

Solution 27:^[27]

None of these solutions worked for me. I'm not 100%, but I think my issue might have been with running the same project on the same port from multiple branches. That used to be an issue for me on Local IIS --- I'm not sure if that's also an issue on IIS Express. What worked for me was following this solution:

https://stackoverflow.com/a/27033934/2133723

Which says to go to:

File -> Open -> Web Site...

and remove the relevant projects. After this, I was able to run the project without changing the port.

Prior to doing this, I had followed the other solutions posted on this question (which didn't help me), such as deleting the .vs folder, so I'm not sure if that would be a necessary step prior to removing the website from File -> Open -> Web Site....

Solution 28:^[28]

I faced this annoying problem all the time in my Visual Studio MVC application especially when you start your work in the morning. Many solutions in this thread works sometimes; but there were many times none of this solves my issue.

At last I figured out only a combination of these steps works for me. Hope this helps somebody.

Close VS.
Delete .vs folder under your solution. Don't worry, it will be automatically created when you open the solution again.
Delete bin and obj folders.
Delete your cookies from the browser that you use to debug the application.
Delete the *.csproj.user file located in the project folder.
Open your startup project file (*.csproj) in Notepad++ or your favorite editor. Go towards the end of the file and delete below 3 lines that contains the local development port info. Don't worry it will be recreated on running the solution again.
```
  <DevelopmentServerPort>0</DevelopmentServerPort>
  <DevelopmentServerVPath>/</DevelopmentServerVPath>
  <IISUrl>http://localhost:60573/</IISUrl>
```
Open your solution again, clean, build and run it. You should be good to go. If this don't work, restart your machine after step 6.

Solution 29:^[29]

Like Donny V. this happened to me in VS2017 using .net core 2.0.

When the project first launched, VS displayed a dialog, offering to create an SSL Cert for localhost - but I didn't want to use SSL, so I stopped running and went into Project Properties and disabled SSL (a checkbox that can be cleared). After doing that I kept getting the issue described.

After trying many things what actually resolved the issue for me was editing the launchSettings.json file located under [ProjectName]/Properties - it's accessible from Solution Explorer.

When the editing was complete, the contents looked like this (where 12345 is a Port Number, and where MyNETCoreApp is the name of the project).

{
    "iisSettings": {
        "windowsAuthentication": false,
        "anonymousAuthentication": true,
        "iisExpress": {
            "applicationUrl": "http://localhost:12345/"
        }
    },
    "profiles": {
        "IIS Express": {
            "commandName": "IISExpress",
            "launchBrowser": true,
            "launchUrl": "http://localhost:12345/",
            "environmentVariables": {
                "ASPNETCORE_ENVIRONMENT": "Development"
            }
        },
        "MyNETCoreApp": {
            "commandName": "Project",
            "launchBrowser": true,
            "environmentVariables": {
                "ASPNETCORE_ENVIRONMENT": "Development"
            },
            "applicationUrl": "http://localhost:12345/"
        }
    }
}

The edits I made were:

Updated the Port Numbers so they were all the same number
Removed a key:value of ssl:0 in one spot
Updated all https:// instances to be http://

Solution 30:^[30]

I had to add https bindings in my local IIS

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	SharpC
Solution 2	Natrium
Solution 3	vinayak hegde
Solution 4	Pradeep Kumar Das
Solution 5	Shane
Solution 6	Baqer Naqvi
Solution 7	Watusimoto
Solution 8	anu
Solution 9
Solution 10	ChinaHelloWorld
Solution 11	Donny V.
Solution 12	R. Salisbury
Solution 13	Ron
Solution 14	dferenc
Solution 15	manzwebdesigns
Solution 16	cagedwhale
Solution 17	Raj Baraskar
Solution 18	smonff
Solution 19	Alejandro Bastidas
Solution 20	Fabio Napodano
Solution 21
Solution 22	Nilay
Solution 23	tqrecords
Solution 24	Ali Jamal
Solution 25	Shaik Matheen
Solution 26	Andy Brown
Solution 27	Emil
Solution 28
Solution 29	StackOverflowUser
Solution 30

'localhost refused to connect Error in visual studio

Solution 1:[1]

Solution 2:[2]

Solution 3:[3]

Solution 4:[4]

Solution 5:[5]

Solution 6:[6]

Solution 7:[7]

Solution 8:[8]

Solution 9:[9]

Solution 10:[10]

Solution 11:[11]

Solution 12:[12]

Solution 13:[13]

Solution 14:[14]

Solution 15:[15]

Solution 16:[16]

Solution 17:[17]

Solution 18:[18]

Solution 19:[19]

Solution 20:[20]

Solution 21:[21]

Solution 22:[22]

Solution 23:[23]

Solution 24:[24]

Solution 25:[25]

Solution 26:[26]

Solution 27:[27]

Solution 28:[28]

Solution 29:[29]

Solution 30:[30]