`my.account.sony.com/sonyacct/signin` rejects non-CTAP authentication attempts.

[RokeJulianLockhart]

Context

I was directed to file this at bugzilla.mozilla.org/show_bug.cgi?id=2006957#c9, per:

• github.com/brave/brave-browser/issues/34096

• github.com/MicrosoftEdge/WebView2Feedback/issues/4097

• issues.chromium.org/issues/40287945

The Affected URI

my.account.sony.com/sonyacct/signin/#/signin/input/id

How To Reproduce The Problem

1. window.location.assign to https://www.sony.co.uk/mysony#signInForm.

2. .click document.getElementById('signInSubmit').

3. += the document.getElementsByTagName('input')['password']'s .value.

Expected Behaviour

I should be authenticated, as I am able to, after assigning a CTAP2 key-pair to the account.

Actual Behaviour

Without a CTAP2 key-pair assigned, I observe a generic failure message:

Can't connect to the server.

(0.373e1202.1755348927.249415c)

Details

The reference identifier differs every time this occurs, so the depicted identifier references a unique failure. If additional events are useful for correlation, additional failure messages, very apparently caused an identical reproduction method, are available elsewhere, online. ¹

All that I observe fail in //*[@id="toolbox-tab-webconsole"] is:

17:23:43.290 XHRPOST
https://ca.account.sony.com/api/v1/ssocookie
[HTTP/1.1 403 Forbidden 502ms]

	
POST
	https://ca.account.sony.com/api/v1/ssocookie
Status
403
Forbidden
VersionHTTP/1.1
Transferred3.29 kB (28 B size)
Referrer Policystrict-origin-when-cross-origin
DNS ResolutionDNS over HTTPS

My Environment

• My Browser

  Name        : firefox
  Version     : 146.0
  Release     : 3.fc43
  Architecture: x86_64
  Install Date: Wed 17 Dec 2025 13:13:34 GMT
  Size        : 268846966
  Signature   :
                RSA/SHA256, Fri 12 Dec 2025 07:56:57 GMT, Key ID 829b606631645531
  Source RPM  : firefox-146.0-3.fc43.src.rpm
  Build Date  : Thu 11 Dec 2025 12:17:21 GMT
  Build Host  : buildhw-x86-03.rdu3.fedoraproject.org
  Packager    : Fedora Project
  Vendor      : Fedora Project
  Bug URL     : https://bugz.fedoraproject.org/firefox

• My OS

  VARIANT: KDE Plasma Desktop Edition
  NAME: Fedora Linux
  VERSION_ID: 43

  Install Date: Thu 30 Oct 2025 20:48:08 GMT
  Signature   :
                RSA/SHA256, Sat 11 Oct 2025 22:24:45 BST, Key ID 829b606631645531
  Source RPM  : fedora-release-43-25.src.rpm
  Build Date  : Sat 11 Oct 2025 22:13:39 BST
  Build Host  : buildvm-ppc64le-17.rdu3.fedoraproject.org
  Packager    : Fedora Project
  Vendor      : Fedora Project
  Bug URL     : https://bugz.fedoraproject.org/fedora-release

Footnotes

1. reddit.com/r/PS4/comments/ft1fhd ↩

[sv-calin]

Thanks for the report. Since this is already filed on bugzilla and the report was moved to Web Compatibility product, this will be closed as a duplicate of https://bugzilla.mozilla.org/show_bug.cgi?id=2006957

Note: I've checked on Windows 10 and I won't get any errors on sony.co.uk when attempting to log in but still won't be signed in regardless of the browsers, works on other sub domains, this looks more like a website issue

[qa_02/2026]