Release date: 19 March 2026

Release notes Master Packager 26.1.9574

New features

Master Wrapper

  • Add ability to upgrade PSADT 4.x packages to latest supported version in Master Wrapper. MPDEV-2386

    • You can now upgrade your PSADT projects and templates to the latest PSADT version supported in the Master Packager Suite. We only support upgrades from PSADT 4.0 and later versions.
      PSADT package version upgrade from Master Wrapper

    • PSADT Template Upgrade:PSADT template outdated version notification
      PSADT template upgrade button in Master Wrapper Templates

  • Add validation for Information URL. MPDEV-2783

  • Add support for multiple detection types. MPDEV-2805

    • Master Wrapper now supports the same detection methods as Microsoft Intune - MSI, Registry, File and Script. This allows packagers to create the correct detection method during the packaging phase, ensuring that all detection data is in place when uploading to Microsoft Intune.
      Master Wrapper Package detections
  • Update PSADT to 4.1.8. MPDEV-2808
    Master Wrapper now supports PSADT 4.1.8

  • Add confirmation dialog if installer is loaded multiple times. MPDEV-2822
    Confirmation dialog in Master Wrapper if installer is loaded multiple times

  • Display warning if PSADT script contains syntax errors before saving. MPDEV-2850
    Warning if PSADT script contains syntax errors before saving

  • Remove PSADT v3 default template. MPDEV-2883

    • We have removed the PSADT v3 template from Master Wrapper because it is out of support. It’s time to upgrade to PSADT v4. Master Wrapper still allows you to open and edit existing PSADT v3 packages.

Master Packager Toolbox

  • Use AppList icons instead of Logo icons for MSIX packages in the Installed Apps page. MPDEV-2780

  • Navigate user back to the root page when clicking on already active navigation menu item. MPDEV-2784

  • Add support for multiple detection types. MPDEV-2838

  • Use MSI product code detection when uploading an MSI to Intune. MPDEV-2848

Master Packager

  • Remove Hide Predefined Folders context menu item. MPDEV-2779

  • Refactor ExecutePowerShell custom action to c++. MPDEV-2852

Master Packager Suite

  • Require user to authenticate again when changing Azure Trusted Signing account name or profile name. MPDEV-2265

  • Update apps to .NET 10 and update third party dependencies to latest. MPDEV-2812

  • Maintain versions of predefined custom actions separately from the Master Package Suite. MPDEV-2820

  • Add MSI property PACKAGE_TELEMETRY_ENABLED to allow package telemetry to be disabled during installation. MPDEV-2874

    • We send anonymous package telemetry (such as name, version, and manufacturer metadata) to understand how we can improve our tools and help you package applications faster. You can disable this telemetry at any time via an MSI property.

Bugs fixed

Master Wrapper

  • Disabling “Welcome window” should not clear “Processes to be closed”. MPDEV-2816

  • Signing is triggered anyways when user cancels save action in the file explorer. MPDEV-2844

  • No/Cancel option on dialogs prompted when saving a project is sometimes incorrectly processed. MPDEV-2851

  • Recently opened projects are displayed incorrectly when more than five projects have been opened and one of them has been deleted. MPDEV-2872

Known issues