Bad Request - Invalid Hostname when accessing localhost using IP address

Question

I'm using Visual Studio and IIS Express to run a web app locally. I can access the web app without any issues using https://localhost:44300.

Out of curiosity, I wanted to access it using the IP address, so I tried https://10.1.1.229:44300 but am getting this error:

I thought I could replace localhost with my private IP address which I got from ipconfig:

I also noticed it says the certificate is not secure.

How can I access my local web app using the IP address?

That's not a surprise. By default, VS only generates a site on IIS Express and bind to localhost, so you cannot use IP address. That's how IIS site bindings work, docs.jexusmanager.com/tutorials/… Modifying the bindings is not recommended as you are only debugging locally. To test a site with production settings, publish to full IIS and manage the settings there. — Lex Li
– Lex Li, Commented Feb 27, 2022 at 4:54

samwu · Accepted Answer · 2022-02-28 06:14:24Z

2

You can try the following settings to ~\Documents\IISExpress\config\applicationhost.config' file.

<binding protocol="http" bindingInformation="ip address:port:host header" />

answered Feb 28, 2022 at 6:14

samwu

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