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Minecraft Server Errors

Knowledgebase / Server Errors

As a Minecraft Server Owner, you want to make sure that your server is running as best that it can. One of the most important parts of creating a server with no worries of crashes or lag is being able to read and understand the error codes that your server may spit out from time to time as some of these may cause your server to crash or not work properly. Once you are able to understand these errors, you will want to know how you can resolve each of them. However, there are endless error codes that may appear on your server and it may be hard to learn every single one of them. This is why we have created a knowledgebase that is full of useful tutorials on what these errors mean, how you can read them, and how you can resolve them.

Minecraft Server Error: Failed To Bind To Port

Minecraft Server Error: Failed To Bind To Port

Overview When opening a Minecraft Server, the last thing anyone wants is to run into a console error that is preventing the server from properly running. Unfortunately, this can happen quite a bit with quite a bit of different errors. One of the less...
Minecraft 'Failed to Verify Username' Error

Minecraft 'Failed to Verify Username' Error

Overview You may have tried to join your Minecraft server and been rejected due to the error "Failed to verify username" or "Invalid Session". This issue is normally because the client's launcher failed to authenticate with Mojang's session servers....
How To Fix The Ticking Entity Crash in Minecraft

How To Fix The Ticking Entity Crash in Minecraft

Overview A Ticking Entity crash will be caused when some form of data, typically a mob or block, in the world becomes corrupted. This will usually be displayed in a crash report as follows: java.lang.nullpointerexception: ticking entity The corruption...
How to fix out of version plugins errors

How to fix out of version plugins errors

Note: Since Minecraft began updating from 1.7.4. to 1.8. there has been an extreme amount of fragmentation. This means that there are many different snapshots between 1.7.5. and 1.7.9. that provide partial play ability. You can find a list of the latest...
Kicked by an Operator Message in Minecraft

Kicked by an Operator Message in Minecraft

Overview You may have experienced an issue where you or a player cannot join the server due to the error “You have been kicked by an operator”. You may be confused as to why they are getting this error if you have not banned this player. If from you...
Minecraft Server Error: Connection Refused

Minecraft Server Error: Connection Refused

The “Connection Refused” error typically means your attempt at connecting to the server was dropped or refused. Most of the times this error is network related, whether be it a bad connection to the server, using the wrong Minecraft client version, or ...
Minecraft Server Can't Keep Up Error

Minecraft Server Can't Keep Up Error

If you encounter lag on your server and notice the “Can’t keep up” error in your server console, this indicates your server's performance is being significantly impacted. So much so that you may start to notice a time dilation effect or TPS (Ticks Per S...
Minecraft Server Error: Missing Required Core Mod or Plugin

Minecraft Server Error: Missing Required Core Mod or Plugin

While most mods and plugins are standalone installations that only require you to upload the respective file to the mods or plugin folder, some require additional dependencies in order to run. These dependencies are referred to as core files because without...
Minecraft Server Error: Outofmemoryerror Java Heap Space

Minecraft Server Error: Outofmemoryerror Java Heap Space

When we think about running a Minecraft server, one of the first things we need to consider is the amount of RAM that is assigned to it. Unbeknownst to those just starting off in the realm of hosting, Minecraft servers can require a significant amount...
How to Read Minecraft Server Logs

How to Read Minecraft Server Logs

Overview Many times when modifying a server, you will experience issues with the server crashing . This generates a crash report in the FTP File Access which breaks down why the server crashed. However, sometimes there may not be enough information...
What Is The Unable To Access Jar File Error?

What Is The Unable To Access Jar File Error?

The “Unable to access jarfile /jar/minecraft_server.jar” error states that the panel was unable to locate the server jar file as defined in the Server Jar field on the server details page. In most cases this is due to the intended jar file not act...
How to Read Minecraft Crash Reports

How to Read Minecraft Crash Reports

Overview Many times when modifying a server you may experience issues with the server crashing . These crashes are generally caused by either mods, the world, or the server jar. When a server crashes, it generates a crash report in the FTP File Access....
Minecraft Error: Missing Mods In World

Minecraft Error: Missing Mods In World

Introduction Server owners typically encounter this error when running modpacks on their server and switch between various packs. When switching between different versions of the modpack or switching packs, you must also reset the world. If you don't...
Why is my server lagging?

Why is my server lagging?

When experiencing Minecraft server lag it is common to instantly assume that the server company is low quality. However, more often than not the issues are 1 of a few simple things that can be checked in order to get your Minecraft server running as...
Why Won't My Minecraft Server Start?

Why Won't My Minecraft Server Start?

If your Minecraft server will not start, this can be the result of a number of causes. In most cases, it can be resolved or at least discerned with a possible fix. Minecraft servers, modded servers especially, are fickle by nature and can turn on you...