I can't open and uninstall due to the error, how to resolve it?

java.io.FileNotFoundException: C:\Program Files\MATLAB\R2022a\toolbox\local\classpath\authenticationws_client.jcp (The system cannot find the file specified)

at java.io.FileInputStream.open0(Native Method)

at java.io.FileInputStream.open(FileInputStream.java:195)

at java.io.FileInputStream.(FileInputStream.java:138)

at java.io.FileReader.(FileReader.java:72)

at com.mathworks.instutil.FileIO.readLinesFromFile(FileIO.java:180)

at com.mathworks.install_impl.command.GenerateClasspathCommand.createClassPathTxt(Unknown Source)

at com.mathworks.install_impl.command.GenerateClasspathCommand.undo(Unknown Source)

at com.mathworks.install_impl.PreProductInstaller.uninstallProducts(Unknown Source)

at com.mathworks.install_impl.InstallerImpl.uninstallProducts(Unknown Source)

at com.mathworks.install_impl.InstallerImpl.uninstall(Unknown Source)

at com.mathworks.installwizard.model.UninstallTask.execute(UninstallTask.java:38)

at com.mathworks.installwizard.model.AbstractBackgroundTask.execute(AbstractBackgroundTask.java:38)

at com.mathworks.install_task.AbstractInstallTask.call(AbstractInstallTask.java:52)

at com.mathworks.install_task.AbstractInstallTask.call(AbstractInstallTask.java:18)

at com.mathworks.wizard.worker.WorkerImpl.doInBackground(WorkerImpl.java:24)

at javax.swing.SwingWorker$1.call(SwingWorker.java:295)

at java.util.concurrent.FutureTask.run(FutureTask.java:266)

at javax.swing.SwingWorker.run(SwingWorker.java:334)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

at java.lang.Thread.run(Thread.java:748)

(Jul 20, 2022 14:50:34) Error: The application encountered an unexpected error and needs to close. You may want to try re-installing your product(s).

Answer 1

[Jan]

The message suggest to re-install Matlab. So do this: install it over the existing version.

[Tisha Sikder]

For this, I need to uninstall first ,right? I cannot uninstall the existing one for the same reason

[Jan]

@Tisha Sikder: No, you do not need to uninstall. I mean "re-install": Install Matlab again.

Answer 2

[Image Analyst]

Call them on the phone (before the weekend!). Tech support is free for installation for everyone, even students. Yes, talk to a real live, friendly person who will talk you through the entire process.

Do what it says in the FAQ:

https://matlab.fandom.com/wiki/FAQ#During_installation,_the_installer_crashes,_hangs,_gives_an_error_message,_does_not_authenticate_your_license,_or_otherwise_does_finish_installing_correctly.