Support for Microsoft Outlook 2016 for legacy Network Discover File System Targets scanning PST files

Products

• Data Loss Prevention
• Data Loss Prevention Core Package
• Data Loss Prevention Discover Suite
• Data Loss Prevention Enforce
• Data Loss Prevention Enterprise Suite
• Data Loss Prevention Network Discover
• Data Loss Prevention Plus Suite

Issue/Introduction

When is this needed?

• The customer requests clarification on PST file scanning support with the File System target after Outlook 2016 reaches end-of-life.
• Customers are seeking alternative solutions for PST scanning following Microsoft's discontinuation of support for Outlook 2016.

Environment

Applicable Outlook Versions:

• Last tested Outlook 2016 build: 1808 (10730.20102)

DLP Detection Server Compatibility:

• Supported on Windows platform

Applicable DLP Releases:

• Version 16.1
• Version 25.1 (after GA)

Cause

Microsoft Outlook 2016 reaches end-of-life on October 14, 2025.

Resolution

Option 1: Transition to File System High-Speed Discovery.

Customer should migrate to the File System High-Speed Discovery Solution.

• This method enables PST file scanning without dependency on Microsoft Outlook on each Windows detection server.
• Ensures continued functionality beyond Outlook 2016’s end-of-life.
• Reduces reliance on third-party or external software dependency.

Option 2: Continue using Outlook 2016

Customers who cannot transition to File System High Speed Discover may continue using Microsoft Outlook 2016 as the prerequisite software for PST file scanning with the File System target in a Network Discover server type on a Windows Detection Server.