macOS Big Sur: Flutter Error – “dart” can’t be opened because Apple cannot check it for malicious software.

After installing macOS Big Sur, you may run into issues getting Flutter set back up for development. Due to the security enhancements added to Catalina and increased in Big Sur, you may run into macOS blocking the execution of some development tools like Flutter and Dart.

If you run into the error message: “dart” can’t be opened because Apple cannot check it for malicious software.

You simply need to:

  1. Open system preferences/Security & Privacy/General
  2. Unlock by clicking the clock in the bottom left and enter your admin password
  3. Where it has the warning that “dart” was blocked, click “allow anyway”

Published by

Tim Clark

Experienced Business Owner, Chief Information Officer, Vice President, Chief Software Architect, Application Architect, Project Manager, Software Developer, Senior Web Developer, Graphic Designer & 3D Modeler, University Instructor, University Program Chair, Academic Director. Specialties: Ruby, Ruby on Rails, JavaScript, JQuery, AJAX, Node.js, React.js, Angular.js, MySQL, PostgreSQL, MongoDB, SQL Server, Responsive Design, HTML5, XHTML, CSS3, C#, ASP.net, Project Management, System Design/Architecture, Web Design, Web Development, Adobe CS6 (Photoshop, Illustrator)

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