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

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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) 
      this@internal.matlab.desktop_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) 
      this@internal.matlab.workspace.MLWorkspaceBrowser(); 
Error in internal.matlab.desktop_workspacebrowser.RemoteWorkspaceBrowser.getInstance (line 228) 
      managerInstance = internal.matlab.desktop_workspacebrowser.RemoteWorkspaceBrowser(); 
How can I avoid this?

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 6 May 2024
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'

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