Have you encountered the Lunar Client crashing issue? Why does this issue occur and how to solve it? This post from MiniTool Partition Wizard offers you 6 solutions. You can try them one by one.

Why Does Lunar Client Keep Crashing?

Lunar Client is a free third-party game launcher of Minecraft. Compared to the official game launcher of Minecraft, Lunar Client can download and launch the game faster, improve game fps, and install some MODs faster (the official game launcher requires users to install MODs manually while Lunar Client doesn’t have this need).

Therefore, many people will like to use this game launcher. However, some people report that they have encountered the Lunar Client crashing issue when launching the game. Why does Lunar Client keep crashing? The possible reasons are as follows:

  • Corrupted Java Runtime Environment.
  • Corrupted or outdated graphics driver.
  • Insufficient allocated memory.
  • Software incompatibility issue.

How to Fix the Lunar Client Crashing Issue

To fix the Lunar Client crashing issue, you can try the following 6 solutions one by one.

Fix 1. Update the Graphics Driver

To make the graphics card work well, you should make sure the graphics driver is fine. In most cases, you can troubleshoot the graphics card issue by updating the graphics driver. Here is the guide:

  • Press "Windows + X" keys, and then select Device Manager in the pop-up menu to open it.
  • Expand the Display adapters, right-click the driver, and select Update driver.
  • Select Search automatically for updated driver software in the pop-up window. Wait until the update process is completed.

Fix 2. Change Launch Directory

Some people report that they have fixed the Lunar Client crashing issue by changing the game launch directory. You can also try this way. Here is the guide:

  • Open the Run box, type “%appdata%”, and press Enter to open the Roaming
  • Open the .minecraft folder, and create a new folder under this directory (you can name the new folder as your will).
  • Launch Lunar Client and go to Settings. Under Launch Directory, click the Change Directory
  • Select the new folder you created just now and click Select Folder to set it to the launch directory.
  • Then, launch the game again to see if the problem is solved.

Fix 3. Increase the Allocated Memory

To make the game run smoothly, you should make sure you have allocated enough memory to the game. In general, 2GB or more is recommended. Here is the guide:

  • Launch Lunar Client and go to Settings.
  • Under Allocated Memory, drag the block to adjust the RAM.
  • Then, launch the game again to see if the problem is solved.

Fix 4. Reinstall Java Runtime Environment

Playing Minecraft requires the Java Runtime Environment. Therefore, corrupt Java Runtime Environment may be a cause of the Lunar Client crashing issue. In this case, you need to reinstall Java. Here is the guide:

  • Press Windows key + R at the same time to call out the Run
  • Type “cpl” and hit Enter to open the Programs and Features window.
  • Find the Java software, right-click it, and select Uninstall.
  • After uninstalling Java, please restart your PC.
  • Go to the official Java website and then download and install Java again. To get the detailed guide, please read this post: Download, Install, and Update Java 32 Bit & 64 Bit [JDK vs JRE].

Fix 5. Reinstall Lunar Client

If the above methods don’t work, please try reinstalling Launch Client. You should uninstall the client first and then download and install it again. This post may help you: How to Download, Install, and Use Lunar Client – Minecraft.

Fix 6. Perform Clean Boot

If the above methods don’t work, you should consider whether the problem is caused by software incompatibility. In this case, you should perform a clean boot to find the incompatible software. This post may help you: How to Clean Boot Windows 10 and Why You Need to Do So?

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