InvalidPlayerBypassList
Java mod listed for Minecraft 26.x. Downloads from the MC Java Mods app on Android.
InvalidPlayerBypassList allows specific players - added to a configurable bypass list - to join a server even when online-mode is set to true, without…
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Goal
InvalidPlayerBypassList allows specific players to join a Minecraft server even when the server is in online mode, regardless of Mojang authentication. This is particularly useful for private testing, LAN setups, or fallback scenarios where certain usernames (and optionally IPs) should be allowed to bypass authentication checks.
This mod works only if the server is in online-mode=true, and it will intercept login attempts and allow access if the player's name and IP match entries in a configurable bypass list.
How It Works
When a player tries to join the server, the mod checks if they are present in the bypass list. This list is defined by pairs of:
- Username
- Optional IP address
If IP enforcement is enabled via config, the player must match both the name and IP. Otherwise, just the name is sufficient if "none" is specified.
Commands
You can manage the bypass list directly using Minecraft server commands:
/bypasslist add <player> [ip]
- Adds a player (with optional IP) to the bypass list.
- If IP checking is enabled, the IP must be provided.
/bypasslist remove <player> [ip]
- Removes a specific player from the bypass list.
- If the IP is not provided, all entries for the player will be removed.
/bypasslist list
- Lists all current entries in the bypass list with their associated IPs.
/bypasslist on
- Enables the bypass list at runtime.
/bypasslist off
- Disables the bypass list at runtime.
All commands require a permission level of
2or higher (e.g., server operators).
Config
Configuration can be found under invalidplayerbypasslist.properties and includes the following settings:
| Property | Description | Type | Default |
|---|---|---|---|
ip-required |
If true, players must match both username and IP to bypass authentication. | boolean | true |
enforce-bypasslist |
If true, the bypass list is active on server startup. | boolean | true |
Use Cases
This mod is ideal for:
- Whitelisted development environments
- Testing servers with known usernames/IPs
- Offline access fallback while still in
online-mode - Controlled security bypass for known players
Reporting Issues
If you find a bug or want to request a feature:
- Go to the Issues tab of the repository.
- Click New Issue.
- Use the appropriate template (Bug Report or Feature Request).
- Fill in all relevant details.
- Submit the issue.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 26.1, 26.1.1, 26.1.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as invalidplayerbypasslist-1.1.1_26.1-26.1.2.jar — drop this file into the mods folder
- Download size: 33 KB
- Download link checked 11 Oct 2026 — working
These come from our own check of the pack file, not from the source page.