If this error occurs when attempting to start MATLAB, there may be an issue with the MathWorks Service Host.
To resolve this, please try resetting your local credentials with the following steps:
Step 1: Close all running MATLAB windows.
Step 2: After closing MATLAB, execute these exact two commands depending on your OS to kill the MathWorksServiceHost process and remove the user-specific credentials folder:
Windows
In Windows Command Prompt, execute these two commands:
Taskkill /IM MathWorksServiceHost.exe /F
rd /s /q %APPDATA%\MathWorks\credentials
Linux
In Linux Terminal, execute these two commands:
killall MathWorksServiceHost
rm -rf ~/.matlab/credentials
macOS
In Mac Terminal (Finder -> Applications -> Utilities -> Terminal.app), execute these two commands:
killall MathWorksServiceHost
rm -rf ~/Library/Application\ Support/MathWorks/credentials
Step 3: Try running MATLAB again.
If this does not work, perform a clean reinstall of the MathWorks Service Host:
How do I uninstall and reinstall MathWorks Service Host?
If this error occurs when attempting to start up
MATLAB Connector
on macOS, there may be an issue with the secrets file contained with the credentials directory, which may have been deleted or modified.
To resolve this, perform the following:
- Delete the following directory: /Users/$USER/Library/Application Support/MathWorks/credentials
- Delete the "MathWorks Key" key found in your login keychain in the Keychain Access app under Utilities
- Restart MATLAB Connector
