google-chromecorsgoogle-chrome-devtoolspreflight

Chrome not showing OPTIONS requests in Network tab

My web client application is setting HTTP POST requests via fetch API.

I see that OPTIONS preflight requests are sent via debugging proxy (Charles Proxy), but they are not displayed in Google Chrome Developer Tools\Network tab.

I don't have any filters setup on the network tab. I remember OPTIONS requests being visible there, but not anymore. How do I bring them back?

Solution

  • You'll need to go to: chrome://flags/#out-of-blink-cors, disable the flag, and restart Chrome.

    This is an expected behavior change according to:
    https://bugs.chromium.org/p/chromium/issues/detail?id=995740#c1

    I originally came across this via:
    https://support.google.com/chrome/thread/11089651?hl=en