Uploaded June 2025 | Updated September 2026, 2 weeks ago
Mandatory Intune Security Hardening | 4 Topics Covered | Clock is ticking #msintune #microsoftintune
Mandatory Core Hardening - Non-negotiable security updates require proactive planning and migration to protect against emerging threats.
Link 1 - anoopcnair.com/update-scep-profiles-in-intune-new-s-mime
Link 2 - anoopcnair.com/microsoft-intune-connector-with-multiple-domain
Component/Feature
Required Action
Key Deadline(s)
Impact of Non-Compliance
Relevant Sources
Intune Connector for AD
Migrate from the legacy connector (using SYSTEM account) to the new connector (using Managed Service Account).
The Clock is Ticking Upcoming Security Enforcement Deadlines
Microsoft is enforcing security best practices with hard deadlines. Proactive planning is no longer optional.
Late June 2025
===
Deadline for migrating the legacy **Intune Connector for Active Directory**. New Autopilot hybrid join enrollments will fail post-deadline.
The fundamental vulnerability of the old connector is that it operates using the local SYSTEM account on the server where it is installed.
The new connector architecture mitigates this risk by instead using a Managed Service Account (MSA)
===
The introduction of interactive widgets on the iOS/iPadOS lock screen and home screen for apps such as Outlook, OneDrive open a new data leakage vector.
Closing Data Leakage Vectors: iOS/iPadOS Widget Protection - "Sync policy managed app data with app widgets,"
====
If you don’t update your SCEP certificate profiles to include both the first and last name, certificate requests from users devices will start failing.
====
Organizations must also plan for upcoming changes to supported operating system versions.
Later in 2025, Microsoft Intune, including the Company Portal app and App Protection Policies,
require iOS 17 and iPadOS 17 or later, and macOS 14 or later.
Devices running older OS versions may become non-compliant and could lose access to corporate resources based on Conditional Access policies.
July 8, 2025
**Kerberos Certificate-Based Authentication** enters "Enforced by Default" phase, requiring valid CA chains in the NTAuth store.
Late 2025
Intune support ends for older OS versions. **iOS/iPadOS 17+** and **macOS 14+** will be required for compliance
This approach forces administrators to prioritize what Microsoft deems critical, effectively turning a security "best practice" into a "mandatory project." As the community feedback on the AD connector migration clearly shows, this forced march can create significant real-world friction, consuming administrative time, generating support costs, and causing project delays for organizations that may have other competing priorities.
This fundamentally alters the role of the modern Intune administrator. The job is no longer simply about configuring policies and responding to user issues. It is increasingly about proactively managing a continuous cycle of vendor-dictated security improvements. This requires a more strategic skill set, including budget forecasting for potential hardware refreshes, sophisticated project planning to meet deadlines, and clear communication with leadership about the risks of non-compliance. This evolution, while challenging, elevates the strategic importance of the endpoint management function within the organization.
Mandatory Intune Security Hardening | 4 Topics Covered | Clock is ticking #msintune #microsoftintune
Mandatory Core Hardening - Non-negotiable security updates require proactive planning and migration to protect against emerging threats.
Link 1 - anoopcnair.com/update-scep-profiles-in-intune-new-s-mime
Link 2 - anoopcnair.com/microsoft-intune-connector-with-multiple-domain
Component/Feature
Required Action
Key Deadline(s)
Impact of Non-Compliance
Relevant Sources
Intune Connector for AD
Migrate from the legacy connector (using SYSTEM account) to the new connector (using Managed Service Account).
The Clock is Ticking Upcoming Security Enforcement Deadlines
Microsoft is enforcing security best practices with hard deadlines. Proactive planning is no longer optional.
Late June 2025
===
Deadline for migrating the legacy **Intune Connector for Active Directory**. New Autopilot hybrid join enrollments will fail post-deadline.
The fundamental vulnerability of the old connector is that it operates using the local SYSTEM account on the server where it is installed.
The new connector architecture mitigates this risk by instead using a Managed Service Account (MSA)
===
The introduction of interactive widgets on the iOS/iPadOS lock screen and home screen for apps such as Outlook, OneDrive open a new data leakage vector.
Closing Data Leakage Vectors: iOS/iPadOS Widget Protection - "Sync policy managed app data with app widgets,"
====
If you don’t update your SCEP certificate profiles to include both the first and last name, certificate requests from users devices will start failing.
====
Organizations must also plan for upcoming changes to supported operating system versions.
Later in 2025, Microsoft Intune, including the Company Portal app and App Protection Policies,
require iOS 17 and iPadOS 17 or later, and macOS 14 or later.
Devices running older OS versions may become non-compliant and could lose access to corporate resources based on Conditional Access policies.
July 8, 2025
**Kerberos Certificate-Based Authentication** enters "Enforced by Default" phase, requiring valid CA chains in the NTAuth store.
Late 2025
Intune support ends for older OS versions. **iOS/iPadOS 17+** and **macOS 14+** will be required for compliance
This approach forces administrators to prioritize what Microsoft deems critical, effectively turning a security "best practice" into a "mandatory project." As the community feedback on the AD connector migration clearly shows, this forced march can create significant real-world friction, consuming administrative time, generating support costs, and causing project delays for organizations that may have other competing priorities.
This fundamentally alters the role of the modern Intune administrator. The job is no longer simply about configuring policies and responding to user issues. It is increasingly about proactively managing a continuous cycle of vendor-dictated security improvements. This requires a more strategic skill set, including budget forecasting for potential hardware refreshes, sophisticated project planning to meet deadlines, and clear communication with leadership about the risks of non-compliance. This evolution, while challenging, elevates the strategic importance of the endpoint management function within the organization.
