Thursday, 17 September 2026

Custom HTTP header guidance adds a Web Filtering (v2) prerequisite

The period contains two targeted Microsoft Learn updates for Global Secure Access and Internet Access. Custom HTTP header guidance now states that the capability is available only with Web Filtering (v2) policies, while web content filtering guidance removes “preview” from two condition labels.

• Global Secure Access · General

  Custom HTTP headers require Web Filtering (v2) policies

  The updated Global Secure Access guidance states that custom headers are available only with Web Filtering (v2) policies and links to related guidance. Administrators configuring custom headers should verify that this prerequisite is met.

• Internet Access · Conditional Access

  Web content filtering guidance removes “preview” condition labels

  The page removes “preview” from the source traffic type and HTTP method request filtering conditions, updates their headings and links, and refreshes the page date. Administrators should update internal references that use the former labels.

This period briefing was generated by AI from the tracked Microsoft Learn and Message Center changes.