Fix: ‘Failed to Launch Lunar Client’ Error on Windows: 5 Easy Ways

When you try to open the Minecraft Lunar Client, do you get the message Fix Failed to Launch Lunar Client’ Error on Windows? Most of the time, this problem is caused by Lunar Client settings that don’t give it enough RAM or by a missing or broken Java Runtime Environment (JRE).

Other possible causes include a lot of cache folders or an antivirus program that stops the client from working. This article looks at different ways to fix the problem and get things off to a good start. Lunar Client.

Fix: ‘Failed to Launch Lunar Client’ Error on Windows

Reinstall Java Runtime Environment

  1. Press the Windows key and the letter R at the same time to bring up the Run menu.
  2. Type “cpl” and hit Enter to open the Programs and Features window.
  3. Find the Java software, right-click it, and choose “Uninstall.”
  4. Please restart your computer after uninstalling Java.

Change Launch Directory

  1. Type “%appdata%” into the Run box and press Enter to open the Roaming.
  2. Open the .minecraft folder and make a new folder inside it. You can name the new folder whatever you want.
  3. Start Lunar Client and click on Settings. Click the Change Directory link under Launch Directory.
  4. Choose the new folder you just made and click the Select Folder button to make it the launch directory.
  5. Then, start the game again to see if the problem is fixed.
Fix Failed to Launch Lunar Client' Error on Windows

Apply Some Preliminary Checks

  1. Relaunch Lunar Client after closing it.
  2. Close other apps running in parallel with Lunar Client so they won’t interfere with it.
  3. Ensure that your device is connected to the internet and the network connection is stable.

Update the Graphics Driver

  1. To open it, press the “Windows + X” keys and then choose “Device Manager” from the menu that appears.
  2. Expand the Display adapters, right-click the driver, and choose “Update driver.”
  3. In the pop-up window, choose Search automatically for updated driver software. Wait until the process of updating is done.

Delete the Old Renderer Log File

  1. Launch Lunar Client.
  2. Go to the About menu from the top.
  3. Click on Logs under Folders. Clicking this will take you to the Logs folder.
  4. Right-click on the Renderer.old file and click on the Delete icon

Why Is Lunar Client Not Launching?

Lunar Client is easy to use from the start. Players on Windows, macOS, and Linux can all use the program’s features because it works with all of them. Just go to the Lunar Client download page, choose the right operating system, run the installation, and then open the client.

Lunar Client lets you play Minecraft just like the regular launcher, but it runs faster and lets you use up to fifty different mods. It also has a lot of settings you can change to make your Minecraft experience fit your needs. Some mods are made just for popular Minecraft servers like Hypixel or Skyblock, giving online players more ways to customize their games.


Why does my Lunar Client keep freezing?

If Lunar Client keeps crashing on your PC, it’s likely that you have the corrupted or outdated graphics driver on your PC. So you should update your drivers to see if it fixes Lunar Client crashing issues.

What client gives the best FPS?

What is the Best Client for Minecraft. The best Minecraft clients currently available are Badlion Client and Lunar Client, which both have the best feature-to-performance ratio. However, with the new release of Badlion Client Lite, Badlion will have better FPS performance during most in-game situations.

Why is Lunar Client crashing my PC?

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.

Editorial Staff
Editorial Staff
The Bollyinside editorial staff is made up of tech experts with more than 10 years of experience Led by Sumit Chauhan. We started in 2014 and now Bollyinside is a leading tech resource, offering everything from product reviews and tech guides to marketing tips. Think of us as your go-to tech encyclopedia!


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