Anypoint Studio 6.6 with Mule Runtime Engine 3.9.4 Update Site 7 Release Notes

What’s New

Anypoint Studio 6.6.7 focuses on bug fixes.


Mule runtime engine

Version: 3.9.4 EE

Anypoint Studio

Version: 6.6.7


Versions: 3.9.4


Version: 1.2.3


Version: 1.7.4 (munit-studio-plugin)

SAP Connector

Versions: 3.2.5


Versions: 4.7.2

Hardware Requirements

  • MuleSoft recommends a minimum of 8GB RAM on a developer workstation. As applications become complex, consider adding more RAM.

  • 2GHz CPU.

  • 10GB free hard drive space.

Software Requirements

Java Environments

This version of Anypoint Studio requires AdoptOpenJDK 8 to run properly.

Depending on which Mule runtime engine you want to use, you can configure different JDK versions within Anypoint Studio:

  • Mule 3.9.x requires Studio running on Java 8.

  • Mule 3.5.x requires Studio running on Java 7.

  • Other supported runtime versions work fine with both Java 7 or 8.

Operating Systems

  • macOS 10.10.0 through 10.15.x
    Studio 6.6.7 is not compatible with macOS 11.x (Big Sur).

  • Windows 7 (64-bit), Windows 8 (64-bit), Windows 10 (64-bit)

  • RHEL 7.0

  • Ubuntu 15.04 or later

Running real-time antivirus protection software on your operating system might have a negative impact on Anypoint Studio performance. Although this issue is prominent on Windows, it also occurs on Linux and macOS.

Although the steps to solve these performance issues vary depending on your antivirus software, a typical solution is to either allow or exclude the Anypoint Studio and java executables, the Studio install and workspace filesystem locations, or some combination of both. See examples of solutions for McAfee Viruscan, Windows Defender, and Symantec Endpoint Protection.

Migration Guide

Updating your Anypoint Studio version using the update site does not update the bundled version of Mule runtime engine.
To get the latest Mule version after updating Studio, follow these steps.

When opening a previous workspace with projects that were created with Studio 5.1.0 or older, and which has metadata stored in disk, Studio prompts you to update all the projects so that the Metadata Manager can handle the existing types and show them in your project.

You can import all of the external components that you had installed in your old version of Anypoint Studio with a single action. These components include connectors, runtimes, and any other type of extension added through the Anypoint Exchange or the ​Help → Install new software​ menu, as long as there are no compatibility restrictions.

Do this by selecting File > Import and then choose Install > From existing installation. .Import Extensions in Studio image::studio/import-extensions.png[import]

Then specify the location of your old version of Anypoint Studio in your local drive.

Known Issues

  • Anypoint Studio 6.6.x is not compatible with macOS 11.0.x (Big Sur).

Solved Issues


Fixed an issue that caused Studio to fail to clean a project after the project was modified.


Added missing Property attribute as a possible nested attribute of the HTTP requester when configuring OAuth.


  • Access MuleSoft Forum to pose questions and get help from the broad community of MuleSoft users.

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