MUID Cookie

Vendor bing microsoft-clarity bing-microsoft
Type MARKETING
Expiration unknown

What does the MUID cookie do?

store and track visits across multiple websites MUID identifies unique web browser visitors to Microsoft sites using a cookie. Bing sets this cookie to recognize unique web browsers visiting Microsoft sites. This cookie is used for advertising, site analytics, and other operations.

Why this cookie matters

This cookie is commonly used by bing , microsoft-clarity , bing-microsoft for marketing purposes – such as tracking usage behaviour, optimising experience, or enabling marketing functionality.

Because it's categorised as marketing, many jurisdictions require that users give explicit consent before it can be activated. If blocked or denied by the visitor, personalised ads or retargeting features may not function properly.

How Cookifi helps you manage this cookie

Cookifi automatically detects cookies like MUID, categorises them, and gives you full control over when and how they load - based on your users' consent choices.

Whether you manage consent via Google Tag Manager, consent APIs (like the Shopify or WordPress Consent API), or prefer automatic cookie blocking or manual script control, Cookifi integrates seamlessly into your stack.

Built for technical marketers, business owners and developers, Cookifi offers flexibility without sacrificing compliance.