Windows LTSC - Purview DLP For endpoint

Youcef Sifi 0 Reputation points
2025-06-12T18:17:55.7166667+00:00

Hello, I have deployed DLP policies for endpoint across multiple tenants, as I work as a consultant for several companies. One of my clients is using both Windows 11 Pro (General Availability) and Windows 11 LTSC (Build 26100.2894). The DLP policies are working correctly on the Windows 11 Pro devices, but not on the LTSC devices. I’m wondering if there might be a limitation with LTSC regarding DLP support. However, I couldn't find any official Microsoft documentation that confirms this. I’m opening this support ticket to get your input on the matter. Please respond as soon as possible. Thank you

Windows 11
Windows 11
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  1. Chen Tran 410 Reputation points
    2025-06-14T08:33:47.96+00:00

    Hi Youcef,

    Thank you for posting question on Microsoft Windows forum!

    Based on the issue description, The behavior you are encountering is indeed explained by how Windows LTSC is designed and maintained. LTSC editions receive only critical security and maintenance updates rather than the frequent feature updates that are part of the General Availability (GA) or Semi-Annual Channel. This update model means that several modern Microsoft 365 features—including Microsoft Purview Endpoint DLP—may not be available or supported on LTSC builds.

    The following points are to further elaborate why LTSC has limitations with modern features like DLP:

    • Design for Stability over Features: LTSC is designed for specialized devices that require maximum stability and a predictable environment, such as industrial control systems, medical equipment, or point-of-sale systems. It receives security updates but intentionally does not receive regular feature updates or new functionalities that are common in the General Availability (GA) channel (like Windows 11 Pro).
    • Missing Core Components/APIs: Modern Microsoft 365 features, including Endpoint DLP, often rely on specific APIs, services, and components that are continuously updated and integrated into the GA versions of Windows. These might be absent, older, or not fully compatible with the LTSC builds, leading to unexpected behavior or outright non-functionality.
    • Implied by Product Lifecycle: Microsoft's support for Endpoint DLP generally specifies Windows 10/11 Enterprise or Professional editions running in the Current Channel (GA). The lack of explicit support for LTSC is an implication of its different servicing model. As a result, for environments where complete DLP functionality is critical, the recommended approach is to deploy endpoints running fully supported versions of Windows (such as Windows 11 Pro or Enterprise in the Current Channel). This ensures that all the latest security and compliance features—including Endpoint DLP—function as intended.

    Hope the above information is helpful!

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