Why do I receive an error when starting MATLAB Online R2024a "The settings group 'folderRegistry' does not exist." ?

When starting MATLAB Online I get the following error:
The settings group 'folderRegistry' does not exist. 
Error using internal.matlab.datatoolsservices.FormatDataUtils.getCurrentNumericFormat (line 14) 
Invalid default value for property 'PreviousFormat' in class 'internal.matlab.variableeditor.MLDocument': 
The settings group 'folderRegistry' does not exist. 
Error in internal.matlab.desktop_workspacebrowser.RemoteWorkspaceBrowserManager/initialize (line 43) 
      this.Documents = internal.matlab.desktop_workspacebrowser.RemoteWorkspaceDocument(... 
Error in internal.matlab.desktop_workspacebrowser.MLWorkspaceBrowserManager (line 26) 
      this. initialize(userContext);
Error in internal.matlab.desktop_workspacebrowser.RemoteWorkspaceBrowserManager (line 19) 
      [e-mail]_workspacebrowser.MLWorkspaceBrowserManager(Workspace, userContext); 
Error in internal.matlab.desktop_workspacebrowser.W5BFactory.createWorkspaceBrowser (line 84) 
      managerInstance = internal.matlab.desktop_workspacebrowser.RemoteWorkspaceBrowserManager(Workspace, provider, userContext, ignoreUpdates); 
Error in internal.matlab.desktop_workspacebrowser.MFOViewModelWorkspaceBrowserFactory.createWorkspaceBrowser (line 121) 
      obj = fac.createWorkspaceBrowser(workspace, channel, userContext, ignoreUpdates); 
Error in internal.matlab.desktop_workspacebrowser.RemoteWorkspaceBrowser/initialize (line 183) 
      this.Manager = internal.matlab.desktop_workspacebrowser.MFOViewModelWorkspaceBrowserFactory.createWorkspaceBrowser('debug', namespace, context); 
Error in internal.matlab.workspace.MLWorkspaceBrowser (line 43) 
      this. initialize(); 
Error in internal.matlab.desktop_workspacebrowser.RemoteWorkspaceBrowser (line 65) 
      [e-mail](); 
Error in internal.matlab.desktop_workspacebrowser.RemoteWorkspaceBrowser.getInstance (line 228) 
      managerInstance = internal.matlab.desktop_workspacebrowser.RemoteWorkspaceBrowser(); 
How can I avoid this?

Answer 1

[MathWorks Support Team]

It is unclear what's the exact root cause of this issue. It might be caused by corrupted MATLAB preferences.

Please try renaming the preference directory which can be found here:

>> prefdir

ans =

  '/MATLAB Drive/.session/default/.matlab/R2024a'