Update msda-updates-previous-versions-technical-upgrade-support.md

Author: denisebmsft

defender-endpoint/msda-updates-previous-versions-technical-upgrade-support.md

@@ -6,7 +6,7 @@ ms.author: ewalsh
 author: emmwalshh
 ms.localizationpriority: medium
 ms.reviewer: pahuijbr
-ms.date: 06/23/2025
+ms.date: 07/23/2025
 manager: deniseb
 audience: ITPro
 ms.collection:
@@ -29,6 +29,26 @@ Microsoft regularly releases [security intelligence updates and product updates
 
 ## Engine and platform updates
 
+### March-2025 (Platform: 4.18.25030.2 | Engine 1.1.25030.1)
+
+- Security intelligence update version: **1.427.3.0**
+- Release date: **April 1, 2025** (Engine) / **April 9, 2025** (Platform)
+- Platform: **4.18.25030.2**
+- Engine: **1.1.25030.1**
+- Support phase: **Technical upgrade support (only)**
+
+#### What's new
+
+- Improved caching of [device control settings](device-control-policies.md) to improve reliability in occasionally connected environments. 
+- Performance improvement in on-access scans of files in network locations.
+- Fixed the Defender service description to match the latest installed version.
+- Improved Defender engine update logic when the update is included in a custom image.
+- Fix in health reporting where signature update data might have been incorrect.
+- Fixed reporting issue with [controlled folder access](controlled-folders.md) (CFA) protected folders using the PowerShell cmdlet [Get-MpPreference](/powershell/module/defender/get-mppreference) when CFA is disabled.
+- Improved performance when scanning UPX-packed files (Ultimate Packer for eXecutables) and updated the validation process to verify the integrity of the packed file itself.
+- Added support for distinguishing regular cloud allow signatures from clean [Indicators of Compromise](indicators-overview.md) (IoC) in [attack surface reduction](attack-surface-reduction.md) (ASR).
+
+
 ### February-2025 (Platform 4.18.25020.1009 | Engine: 1.1.25020.1007)
 
 - Security intelligence update version: **1.425.1.0**