Help! My client is crashing whenever I try to start it up or connect to my server!
This commonly occurs when you do not have enough memory allocated to your game. Sufficient memory allocation is especially important when it comes to modded gameplay due to the resource demand they require.
Fortunately, most launchers only require a few steps to adjust this. So long as you have the memory space available on the computer you are using to play, you should be good to go once you've made the adjustment.
For modded gameplay, a minimum of 4GB/4096MB is recommended.
More recent versions of Minecraft may demand a bit more, so you might consider 6GB if you're trying a 1.13+ pack.
CubedHost is not directly affiliated with any of these launchers in any way. This guide is here only to help you enjoy Minecraft and connect to your server.
Launchers can change at any time. We will do our best to keep this guide updated but please note that some directions may vary over time pending changes to the launchers. If you ever need help, please reach out to our team!
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So how do I allocate more memory to my launcher?
We've included directions for several launchers below and we'll continue to add new launchers upon request, so feel free to reach out to us if you get stuck or have concerns with any steps you see here.
Minecraft Launcher (Default/Vanilla)
* GIF IS FOR THE PREVIOUS LAUNCHER; DIRECTIONS ARE CORRECTED! - AS OF JULY 3RD, 2019 *
- Open your Minecraft client (Java version).
- Select the
Installationstab towards the top of the launcher.
- Hover over your desired profile/Minecraft version, then select the button with the three dots on the right.
Editfrom the drop-down menu. A modal will appear and
More Optionswill be available in the bottom-left. Select this.
- In the "JVM arguments" field, change
-Xmx#G, replace # with the amount of RAM you'd like to allocate to Minecraft in GB (do not modify any other text).
- Select the green
Savebutton and you're done!
Open your ATLauncher, select the
Settings tab from the right-side menu pane, then select the
Java/Minecraft tab from the top navigation bar.
You should now see drop-down menus available regarding memory.
Maximum Memory/RAM drop-down selection to your desired memory amount (remember that at least 4096 MB is recommended).
Don't forget to select the
Save button once you're done!
Twitch Launcher (Curse/FTB Modpacks)
To adjust this setting in the Twitch Launcher, access your settings by selecting the small down arrow in the top-right, then select the
Settings option with the gear icon.
Next, select the
Minecraft tab on the Settings page and locate the
Allocated Memory slider under
Java Settings. Adjust the slider to your desired memory amount (remember we recommend at least 4096MB).
Open your Technic Launcher, select the
Launcher Settings using the little gear found in the top-right, then select the
Java Settings tab from the navigation bar in the Java Settings window.
You should now see a drop-down menu available to adjust Memory.
Adjust this to your desired memory amount (remember that at least 4GB is recommended).
Your changes are saved automatically, so feel free to close the Launcher Options window and get to mining!
Legacy FeedTheBeast (FTB) Launcher
Options, then move the
RAM Maximum (MB) slider around to your desired memory amount (remember, we suggest at least 4096MB).
Select the gear in the top-right corner, change the
Max: under the
Minecraft: Options to increase the amount of RAM (remember, we suggest at least 4096MB).