Why do cookies fail only in Safari?

Safari’s ITP blocks many third-party contexts and can purge storage aggressively. Test in a first-party context or add Storage Access API prompts.

Are third-party cookies gone for good?

Yes—Chrome is phasing them out. Use first-party sets, same-site cookies, or token-based approaches instead.

Why does my login expire immediately?

Session cookies may be blocked or the clock may be skewed. Check browser date/time and allow first-party cookies for the site.

Browser Diagnostics

Cookie Test

Check if cookies are enabled and functional

Storage Test

Cookie and storage round-trip checks

0/0 working

Why this matters

Many logins, carts, and personalization features require first-party cookies. If cookies are blocked or partitioned, you may get endless login loops or missing sessions. This test confirms basic set/read behavior in the current context.

Third-party cookie blocking is now default in most browsers. If you rely on cross-site embeds, move auth to a top-level domain or implement Storage Access API fallbacks.

Cookie fixes

Enable cookies →Third-party cookies (explained)Fix login loops

FAQ

Why do cookies fail only in Safari?: Safari’s ITP blocks many third-party contexts and can purge storage aggressively. Test in a first-party context or add Storage Access API prompts.
Are third-party cookies gone for good?: Yes—Chrome is phasing them out. Use first-party sets, same-site cookies, or token-based approaches instead.
Why does my login expire immediately?: Session cookies may be blocked or the clock may be skewed. Check browser date/time and allow first-party cookies for the site.