x-ms-gateway-slice Cookie

What does the x-ms-gateway-slice cookie do?

This cookie helps with secure authentication by verifying user login credentials. This cookie identifies a gateway for load balancing, used by Azure Load Balancer to determine which server should handle requests.

Why this cookie matters

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

Because it's categorised as preferences, many jurisdictions require that users give explicit consent before it can be activated. If blocked or denied by the visitor, preference-related features (like remembering language or layout choices) may not function properly.

How Cookifi helps you manage this cookie

Cookifi automatically detects cookies like x-ms-gateway-slice, 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.