What is the _uetvid cookie?
This is a cookie utilised by Microsoft Bing Ads and is a tracking cookie. It allows us to engage with a user that has previously visited our website.
Our October 2026 scan found it on 21 sites (1% of the 2,450 we scanned), set before any consent.
- Purpose
- Advertising
- Belongs to
- Bing / Microsoft
- Set as
- First-party (under the site's own domain)
- Typical lifetime
- 13 months (vendor says: 16 days) — longer than the vendor documents
Sites that set _uetvid before consent
The highest-ranked 21 of 21 sites.
- media.net6 tracking companies
- oxylabs.io11 tracking companies
- tailscale.com7 tracking companies
- instructure.com17 tracking companies
- twilio.com9 tracking companies
- hpe.com10 tracking companies
- crunchyroll.com4 tracking companies
- ssl.com9 tracking companies
- audible.com25 tracking companies
- redis.io12 tracking companies
Show 11 more sites
- aarp.org30 tracking companies
- simplisafe.com31 tracking companies
- heylink.me7 tracking companies
- zapier.com3 tracking companies
- xero.com18 tracking companies
- guard.io14 tracking companies
- vt.edu10 tracking companies
- teacherspayteachers.com5 tracking companies
- ana.co.jp16 tracking companies
- reolink.com11 tracking companies
- bankrate.com9 tracking companies
Related cookies
Other cookies from Bing / Microsoft.
- MUID38 sites
- ASP.NET_SessionId23 sites
- _uetsid22 sites
- MR16 sites
- ai_session13 sites
How to stop it
Declining non-essential cookies in a site's consent banner should stop _uetvid being set on later visits. Blocking third-party cookies in your browser settings stops the third-party kind everywhere, and clearing cookies for a site removes any it already set.
Description from the Open Cookie Database (Apache 2.0).
Understanding this page
- How cookie lifetimes work, and why a 13-month _ga matters
What a cookie's "expires" field actually controls, why Google Analytics ships a 2-year default that many sites cut down to 13 months, and how Safari's 7-day cap on script-set cookies changes the picture.
- First-party vs third-party cookies (and why "first-party" still tracks you)
What the distinction actually means technically, why browsers only block one of the two, and how CNAME cloaking, server-side tagging and cookies like _ga let sites keep tracking under their own domain.
- How to block or limit trackers
Browser privacy settings, content blockers, Global Privacy Control and clearing cookies compared honestly — what each one actually stops, what it doesn't, and what it costs you in return.