MVC WebApplication no longer starts in IIS Express (redirects to https://localhost in Chrome)

Question

I was changing OAuth/Owin settings and Azure publish settings in a Web Application project this morning, but soon after we decided deployment will be to a specific IIS Azure

Answer 1

Answer at bottom, given to this chromium issue [issue 444479] helped me:

Same here - I also believe caused by HSTS - see http://en.wikipedia.org/wiki/HTTP_Strict_Transport_Security

If you have (developed) any other localhost sites which send a HSTS header...

eg. Strict-Transport-Security: max-age=31536000; includeSubDomains; preload

...then depending on the value of max-age, future requests to localhost will be required to be served over HTTPS.

To get around this, I did the following.

• In the Chrome address bar type "chrome://net-internals/#hsts"
• At the very bottom of a page is QUERY domain textbox - verify that localhost is known to the browser
• If it is, DELETE the localhost domain using the textbox above
• Your site should now work using plain old HTTP

HTH,

Jay

ps. This is not a permanent solution, but will at least get it working between projects. If anyone knows how to permanently exclude localhost from the HSTS list please let me know :)

Give it a try.