Groups: added
What Microsoft changed
Month-dated announcementAdded the onPremisesExtensionAttributes property to the group resource. Use it to access extension attributes 1-15 synchronized from on-premises Active Directory.
API documentation
Related public evidence
- Official documentation · 20 Oct 2026Graph changes
- Community source · 19 Oct 2026Should You Install Certificate Authority on a Domain Controller? PKI Design Best Practices
- Public source · 19 Oct 2026Retiring NTLM: Frequently asked questions
- Public source · 13 Oct 2026Active Directory Federation Services (AD FS) Spoofing Vulnerability
- Public source · 13 Oct 2026Active Directory Federation Services (AD FS) Spoofing Vulnerability
- Public source · 13 Oct 2026Active Directory Federation Services (AD FS) Security Feature Bypass Vulnerability
Source: Microsoft Graph monthly changes. Collection coverage. The publisher supplies a month, not an exact announcement day.
What changed
First observed 21 Oct 2026No field changes in the recorded history.
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