What kind of network error is Chrome encountering when 'Status = (failed)' and 'Type = undefined'

Question

Sometimes I randomly see network requests from Chrome failing with Status = \'(failed)\' (status code 0 from the request object in JavaScript) and the response type as \'und

Answer 1

I was getting this error when a cdn was being blocked by my isp. Flushing out dns worked for me. Refer this for the how-to.

Answer 2

We had exactly this issue with an application reaching an API we control. It took a while for me to realize that slower clients were not seeing the issue, whereas faster clients (and pages with more requests) were.

It turned out that our HA Proxy was rate limiting requests on our frontend. Once we raised the limit from the value of 20 we had set up to something around 100, we no longer had the issue.

So it's possible you're getting blocked by something along the request pathway, potentially a proxy or load balancer or even a firewall.

Answer 3

I ran into this while working on an ad serving network. It ended up being the AdBlock Plus Chrome extension blocking any assets, probably the "ad" in the path. I whitelisted my domain and it worked.

Answer 4

I began seeing these errors on a web page with a bad SSL certificate. I had already allowed the browser to proceed to the page, but after a while AJAX requests to the server would start failing. To fix the problem I would have to refresh the page in order to get back to the warning message so that I could accept it again and have my AJAX requests stop being blocked.

Unfortunately, in my case I haven't found the reason why Chrome forgets I want access to the domain. There is the Remember decisions to proceed through SSL errors for a specified length of time setting in chrome://flags, but it appears to have no affect.

Answer 5

I ran into this in an ASP.NET IHttpHandler because I was calling context.Response.Close() instead of context.Response.End(). Wasn't quite closing the HTTP connection properly. It didn't cause a problem in any browsers but Chrome.

Answer 6

In my case I have a Samsung laptop, and I unistalled Samsung Support Service, clear cache of Chrome and its works.