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The modeling tool* version 19.0 SP3 does not start after upgrading to Mac OS X Big Sur. How can I fix this issue?

This happens because the application is moved into quarantine.

To remove the application from quarantine

  1. Open a terminal.
  2. Write the command: xattr -r -d /<modeling tool installation folder> (e.g. "xattr -r -d /Applications/MagicDraw")
  3. Press Enter to execute the command.
  4. Close the terminal and start the modeling tool* using the .app file.

*Magic Software Architect, Magic Cyber Systems Engineer, Magic Systems of Systems Architect, MagicDraw, Cameo Systems Modeler, and Cameo Enterprise Architecture 

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