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What is the __zlcmid cookie?

Remembers a live-chat visitor between sessions so the Zendesk/Zopim widget keeps conversation state.

Functional Needs consent

Cookie name__zlcmid
Set byZendesk / Zopim Chat
CategoryFunctional
Typical duration1 year
Domainfirst-party
Consent required?Yes — before it is set

Does __zlcmid need consent?

Yes. __zlcmid is a functional cookie, and under the EU ePrivacy rules (and the Irish ePrivacy Regulations) a site must get your prior, informed consent before setting it. If you see __zlcmid on a site before you click "Accept" on a cookie banner — or on a site with no banner at all — that is very likely a compliance problem.

Is __zlcmid a tracking cookie?

Remembers choices like language or region. Not strictly necessary, so consent is required before it is set.

How to see and remove __zlcmid

  • See it: open your browser's developer tools → Application (Chrome/Edge) or Storage (Firefox) → Cookies, and look for __zlcmid.
  • Remove it: clear cookies for the site, or use your browser's "Clear browsing data" for cookies. It will reappear if you keep using the site and consent is in place.
  • Stop it being set: decline non-essential cookies on the site's banner. On a compliant site, clicking "Reject all" prevents __zlcmid from being set at all.
Run it the other way round

Want to know which cookies your site sets — and whether any fire before consent? Scan it free and get the full list, categorised, with the ones that load too early flagged.

Scan your website →

Fixing pre-consent cookies

If a scan shows __zlcmid or other tracking cookies loading before the visitor consents, the fix is a consent management platform (CMP) that blocks non-essential tags until the visitor agrees. Cookies.ie is our GDPR / ePrivacy CMP — EU-hosted, with a real one-click "Reject all" and consent logging. See the fix guide for pre-consent trackers.

Cookie purposes and durations reflect vendor documentation and common consent databases as of 2026-06-25; a specific site may configure __zlcmid differently. This is general information, not legal advice.