---
title: Deprecated features - Ivanti EPMM 12.9.0.0
slug: epmm/release-upgrade-guide/deprecated-features-ivanti-epmm-12900
createdAt: 2026-11-05T11:34:44.289Z
---

- **Deprecation of Rapid Security Response Settings**: Apple deprecated the allowRapidSecurityResponseInstallation and allowRapidSecurityResponseRemoval iOS MDM restrictions as part of its transition from the Rapid Security Response system to a newer mechanism called Background Security Improvements (BSI), starting with iOS 26.x. As a result, these restrictions do not apply to devices running iOS 26.x or later.