ERR_TOO_MANY_REDIRECTS when open app through the App Launcher

Attempt to open any app through the App Launcher (Cloudflare Access) results in ERR_TOO_MANY_REDIRECTS error (but everything works just fine if manually navigate to the target domain of protected app after that error).

Tested w/ Grafana and Apache Superset.

Any thoughts?

Whenever I see this, I open up my browser’s Dev Tools (F12 in Chrome) and look at the Network tab. It should show the full string of redirects. Clicking on any one of them should show you what it’s redirecting to and that should trace the loop that’s happening.

I’m not sure how either of these handle Access logins. Or are they going through a Bypass policy for that app?

Thank you for your time.

No bypass policy used.
I’ll post a dump of HTTP transactions here, if it can help to identify the source of the issue.

Here is the network dump in HAR format:

You can research it eg. using HAR Analyzer

The problem was the value of SameSite cookie attribute (ref: MDN Docs, CF Docs): everything works as expected with the value None (only)

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