Java Virtual Machine Launcher Error | Solutions

If you are on this page it is because you have encountered problems with the Java Virtual Machine Launcher ErrorThis error occurs when attempting to run the Java virtual machine and may prevent Java-associated programs from running.

The virtual machine or processor inside your computer that provides an environment for all Java programs to run on your computer is the Java Virtual Machine. It is a set of specifications of an abstract machine that loads the file containing the programming, interprets it and also helps to execute it.

Therefore, the JVM takes the bytecode of the program, which is stored in a format «.class» and converts it into the operating system specific code, which the machine can read and therefore can run on your computer. So, without the proper functioning of this virtual machine on our computers, the many Java based applications will not run on our computers.

But that is precisely what happens very often (when booting the computer or opening a Java-based application) and we get an error called Java Virtual Machine Launcher ErrorIn this article, we will talk about the standard errors of the Launcher. Virtual machines Java, the type of error messages that will appear when you have a particular problem and how to resolve these problems.

Java Virtual Machine Launcher Error. Solutions

Depending on the exact cause of this error, one of these methods may help you resolve the Java Virtual Machine Launcher Error.

Remove malware from your computer

If the error message is this: «Error message: Java Virtual Machine Launcher could not find the main class: the program will now exit», then Microsoft Malicious Software Removal Tool, which is a built-in utility tool in Microsoft, can be used to remove any malware of your computer.

To access this tool, do the following:

• Go to option Search in Windows In your Start menu, type “mrt” and press Enter.
• In the tool, choose the option “Complete analisis» and follow the on-screen wizard to start the analysis.
• The analysis may take a few minutes to complete and in the process, it may also will remove all spyware, adware and malware of your computer.
• Restart your computer once the scan is complete.

Now, using the system configuration tool on your computer, solve the rest of the problem.

• To start this, you must type «msconfig» in the Search Windows option that you can find in the Start menu.
• In this utility tool, click on the “Home", which opens a long list.
• Search the list to find the following: «WJView.exe" Y "javaw.exe» and uncheck these options.

Uninstall and reinstall Java

As the heading suggests, this solution involves uninstalling the problematic Java Virtual Machine Launcher from your computer and then installing it again. This is a rather primitive but effective solution to Java Virtual Machine Launcher Error problems when the error message displays: "Error message: Error opening registry key."

• Before uninstalling, open Windows\system32 and delete the following files:
  • «javaws.exe»
  • «java.exe»
  • «javaw.exe»
• Also remove any other Java executable file that you can find.
• To uninstall JVM, open the “Programs and Features» in the Control Panel on your desktop.
• Scroll down the list to find There Java runtime and uninstall it.

To reinstall the Java runtime, visit java.com: Java + You y download the most compatible versionChoosing the right version is very important as an incompatible Java Runtime version is one of the main reasons for Java Virtual Machine Launcher Error.

You may be interested in: How to Fix “A Javascript Error Occurred In The Main Process” Error

Erasing computer memory

Another of the most common reasons for Java Virtual Machine Launcher Error problems is a lack of memory on your computer. This insufficiency can be in your computer's overall memory or in the amount of memory you allocate to Java Runtime. To solve the former, simply remove all those programs you don't use and you'll have a clutter-free (and hopefully problem-free) computer.

When Java allocates insufficient memory space, the error that appears is: «Error message: Failed to create Java virtual machine». This is one of the most common errors among the Java Virtual Machine Launcher Error that is encountered while playing Java games like Minecraft.

To resolve the memory space allocated to Java, follow these steps:

• go to Systems options at the Control panel and open the window Advanced.
• Here, when you click on the Environment Variables option, you will find the option "System variables".
• Click on the variable option "New" and put the variable name as «_JAVA_OPTIONS» worth "Xmx512M". (Xmx refers to the maximum space and Xms refers to the minimum space you can allocate to Java)

Other methods

This solution is for the Java Virtual Machine Launcher Error message that says: «Error message: The jar file cannot be accessed». What appears when trying to open some Java-based applications. To solve this type of error follow the steps below:

• Start by opening the tab "Default programs" from the Start menu.
• Scan the list to find an option called «Associate a file type or protocol with a program» and select it.
• There will be an extension ".jar": Click on this and change the default program to «JAVA virtual machine launcher».
• Clicking "Close" changes will be saved.

Try reopening the program that was previously causing the problem.

Final Words

As you may have seen, there are many types of Java Virtual Machine Launcher Error that can occur on your PC and each of them is related to a particular problem. Hopefully, by following this article, you will resolve the Java Virtual Machine Launcher Error and all your Java-based applications and games will be working smoothly again.