Adobe Fonts 412 Precondition Failed Error on WordPress Since June 8, 2025

Question

Hello Adobe Community,I'm experiencing a 412 Precondition Failed error when trying to load Adobe Fonts CSS files on my WordPress website since around June 8, 2025.Problem Details:Error: HTTP 412 Precondition FailedAffected URL: https://use.typekit.net/dox8zfb.cssPlatform: WordPress websiteStarted: Around June 8, 2025When I test with cURL, I get: HTTP/2 412 server: nginx content-type: text/plain;charset=utf-8 content-length: 19 Response body: "precondition failed"My WordPress site sends these headers: cache-control: no-cache pragma: no-cache accept: text/css,/;q=0.1 referer: https://kushami.fida-test.online/ sec-fetch-dest: style sec-fetch-mode: no-cors sec-fetch-site: cross-siteWhat I have tried:Created new Adobe Fonts projects - Same errorTested different project IDs - All return 412 errorModified WordPress request headers - No improvementDisabled all caching plugins - Same issueTested with direct HTML embed bypassing WordPress enqueue - Still 412 errorTested from command line with cURL - Same errorVerified project settings - WordPress domain properly configuredTested different request headers like If-None-Match, Referer, User-Agent - All return 412The issue occurs regardless of how fonts are loaded and affects both frontend and admin. Even direct cURL requests fail with the same error, so this seems to be a server-side issue rather than WordPress-specific.Could the Adobe Fonts team please help me understand:Did server-side precondition validation change around June 8, 2025?Are there specific headers required that my WordPress site isn't sending?Is there a WordPress-specific configuration I'm missing?Any workarounds for this 412 error?My WordPress site worked fine with Adobe Fonts until this issue started suddenly around June 8. All my Adobe Fonts projects are now affected.Has anyone else experienced this same 412 error with Adobe Fonts recently? Any guidance would be greatly appreciated.Thank you!

Tarun Saini · Accepted Answer

Thanks for your response @mayumi_n,Thanks for sharing the JavaScript embed link — it looks correct, and we can confirm it's loading properly when accessed directly:https://adobe.ly/4dUlCIw  However, when we checked your website, we didn't see any reference to the Typekit embed code in the page’s source or network activity. This means the font isn’t being loaded, not even a failed attempt.To help troubleshoot this further, could you please update your site with the embed code and then share the updated page with us Regards,Tarun

Tarun Saini · Answer

Hi @mayumi_n,Welcome to the community, and thanks for reaching out! The error you're seeing occurs because this project doesn’t support loading fonts using CSS when the font kit includes Chinese, Japanese, or Korean characters. These specific fonts need to be loaded using the JavaScript embed code instead. Here’s a helpful article that explains why:Why some fonts require JavaScript embedTo get the correct JavaScript embed code for your font kit, just head over to your Web Projects page:Your Adobe Fonts Web Projects Regards,Tarun

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