Fixes, errors & how-tos
Real solutions for game-server errors, Linux & VPS, web hosting and networking — written by the team that runs a protected Frankfurt network. Search the exact error, find the fix.
Minecraft server errors
Crashes, low TPS, version and login errors — the exact fix for each.
Fix Minecraft "OutOfMemoryError: Java heap space"
Server crashing out of memory? What it means and how to fix it for good.
Read fix MinecraftHow to Allocate More RAM to a Minecraft Server
The -Xmx/-Xms flags, doing it in a panel, and how much RAM to give.
Read fix MinecraftWhy Can't My Friends Join My Minecraft Server?
Every cause — IP, port, firewall, version, whitelist — and the fix for each.
Read fix MinecraftHow to Whitelist a Minecraft Server
Enable it, add and remove players, and the commands that actually work.
Read fix MinecraftHow to Op Yourself (Make Yourself Admin)
The /op command from the console, op levels, and opping others safely.
Read fix MinecraftHow to Change Gamemode & Difficulty
The /gamemode and /difficulty commands and the server.properties defaults.
Read fix MinecraftMinecraft server.properties Explained
Every setting that matters, in plain English — gameplay, access and performance.
Read fix MinecraftHow to Read a Minecraft Crash Report
Find the mod or plugin at fault and fix the most common crashes.
Read fix MinecraftFix Minecraft "Can't Keep Up! Is the Server Overloaded?"
Low TPS explained — what causes the lag and how to get back to 20 TPS.
Read fix MinecraftFix Minecraft "Failed to Login: Invalid Session"
The client fix and the server-side online-mode setting.
Read fix MinecraftFix Minecraft "UnsupportedClassVersionError"
Wrong Java version — which Java each Minecraft needs.
Read fix MinecraftFix Minecraft "You Need to Agree to the EULA"
The one-line fix in eula.txt, explained.
Read fix MinecraftFix Minecraft "Outdated Server / Client"
Version mismatch — match versions or bridge with ViaVersion.
Read fix MinecraftFix Minecraft "Connection Refused: No Further Information"
What the io.netty error means and how to fix it.
Read fix MinecraftFix Minecraft "Failed to Verify Username"
The online-mode and auth fix, server-side.
Read fix MinecraftFix Minecraft "Internal Exception: ReadTimedOut"
The timeout causes and fixes, both client and server.
Read fixSurvival & sandbox servers
Rust, ARK, Valheim, Palworld, Zomboid and more — won't list, mods, or connect.
Fix Rust Oxide / uMod Plugins Not Loading
Plugins broken after a wipe or update? The usual causes and the quick fix.
Read fix Survival & SandboxFix Rust "Disconnected: EAC" Errors
Clear the EasyAntiCheat kick with these client-side fixes.
Read fix Survival & SandboxFix Rust Server Not Showing in the Browser
Ports, the Modded tab, tags, and F1 connect.
Read fix Survival & SandboxFix ARK Mods Not Downloading or Updating
Force a clean re-download and keep mods in sync.
Read fix Survival & SandboxFix ARK "Joining Failed" / "Connection Timeout"
The query-port fix, mod check, and direct connect.
Read fix Survival & SandboxFix Valheim Dedicated Server Not Showing
The ports, the crossplay catch, and how to join by IP.
Read fix Survival & SandboxFix Valheim "Incompatible Version"
Match client, server and mod versions — here's how.
Read fix Survival & SandboxFix Palworld Dedicated Server Not Showing Up
Open the port and connect directly — the reliable way.
Read fix Survival & SandboxFix 7 Days to Die Server Not Showing
Ports, visibility, EAC — and how to connect directly.
Read fix Survival & SandboxFix Project Zomboid Server Not Showing
Ports, the public toggle, mod order and direct connect.
Read fix Survival & SandboxFix DayZ Server Not Showing (DZSA)
Ports, mod matching with DZSA, and direct connect.
Read fix Survival & SandboxFix Sons of the Forest Server Not Showing
Ports, the config, and joining by IP.
Read fix Survival & SandboxFix Satisfactory Server Not Connecting
The port, add-by-IP, and claiming the server.
Read fix Survival & SandboxFix Terraria Server "Can't Connect"
The port, joining, and tModLoader mod matching.
Read fix Survival & SandboxFix Unturned Server Not Showing
Ports, the Internet/LAN setting, and direct connect.
Read fix Survival & SandboxFix SCP: Secret Laboratory Server Not Showing
The port, central-server verification, and direct connect.
Read fixFiveM & roleplay servers
Resources, handshake, listing and crashes on GTA V roleplay servers.
Fix FiveM "Couldn't load resource"
A FiveM resource won't start? Manifest, dependencies and script errors — fixed.
Read fix FiveM & RoleplayFix FiveM Stuck on "Connecting" / o:err
Handshake, ports and cache — why FiveM hangs on connect.
Read fix FiveM & RoleplayFix FiveM Server Not Showing in the List
The Cfx license key, ports, and direct connect.
Read fix FiveM & RoleplayFix FiveM CitizenFX Crash on Join
Cache, GTA V files and mods — the client-side fixes.
Read fixShooters & voice servers
CS2, CS 1.6, Source, GMod, Squad, Insurgency and TeamSpeak fixes.
Fix CS2 "VAC Was Unable to Verify the Game Session"
Kicked from matchmaking? The fixes that actually clear it.
Read fix Shooters & VoiceFix CS2 Community Server Not Showing
Ports, the GSLT token, and direct connect.
Read fix Shooters & VoiceFix "Server Is Enforcing Consistency for This File"
CS:S / TF2 / GMod kick — the player and admin fixes.
Read fix Shooters & VoiceFix AMX Mod X "Couldn't load library" (CS 1.6)
AMXX plugin stuck on "bad load" or "failed"? The real causes and the exact fix.
Read fix Shooters & VoiceFix Garry's Mod Addons & Missing Textures
Workshop collections, FastDL and CS:S content — fixed.
Read fix Shooters & VoiceFix Squad Server Not Showing
Ports, the license token, and direct connect.
Read fix Shooters & VoiceFix Insurgency: Sandstorm Server Not Showing
Ports, the community filter, and direct connect.
Read fix Shooters & VoiceFix TeamSpeak "Failed to Connect to Server"
The ports, the address format and the checks that work.
Read fixLinux & VPS administration
SSH, permissions, resources, databases, panels and the commands you need.
How to Connect to Your Server With SSH
Connect from Windows, Mac & Linux — the command, PuTTY, keys and ports.
Read fix Linux & VPSFix SSH "Permission denied (publickey)"
Wrong key, wrong user or bad permissions — the exact fix for each.
Read fix Linux & VPSHow to Set Up a Firewall on Linux (UFW)
Default-deny, open only the ports you need, without locking yourself out.
Read fix Linux & VPSHow to Install and Use Fail2ban
Auto-ban IPs that brute-force your SSH — install, tune and unban.
Read fix Linux & VPSFix SSH "Connection refused" / "timed out"
What each error means and the exact steps to get back in.
Read fix Linux & VPSFix SSH "Too Many Authentication Failures"
Too many keys offered — the IdentitiesOnly fix.
Read fix Linux & VPSFix "Permission denied" (chmod & chown)
Understand permissions and ownership, and fix it the right way.
Read fix Linux & VPSCheck CPU, RAM & Disk Usage on Linux
The essential commands to find what's eating your resources.
Read fix Linux & VPSEssential Linux Commands for Server Admins
A practical cheat sheet — files, processes, screen, services and logs.
Read fix Linux & VPSFix "No Space Left on Device" on Linux
Find what filled the disk — files, logs, and inodes.
Read fix Linux & VPSFix Linux Killing Your Server (OOM Killer)
Confirm the out-of-memory kill and stop it happening.
Read fix Linux & VPSFix "Address Already in Use" / Port in Use
Find what holds the port and free it — with commands.
Read fix Linux & VPSFix a Cron Job Not Running
PATH, paths and permissions — how to debug cron.
Read fix Linux & VPSFix MySQL "Access Denied for User" (1045)
Wrong password, host or grants — the fixes with commands.
Read fix Linux & VPSFix MySQL "Too Many Connections"
The quick fix and how to raise max_connections properly.
Read fix Linux & VPSFix MySQL / MariaDB Won't Start
Read the error log and fix the common causes.
Read fix Linux & VPSFix Common SteamCMD Errors (0x202, Timeout)
Disk space, timeouts and "No subscription" — solved.
Read fix Linux & VPSFix Pterodactyl Server Stuck Installing / Won't Start
Wings, egg, allocation — the panel fixes.
Read fix Linux & VPSFix Discord Bot Offline / Not Responding
Token, intents, permissions and 24/7 hosting.
Read fix Linux & VPSFix "user is not in the sudoers file"
Grant sudo access properly — and recover if locked out.
Read fix Linux & VPSFix "fork: Cannot allocate memory"
Out of RAM or process slots — how to recover.
Read fix Linux & VPSFix "command not found" on Linux
Not installed or not on PATH — how to tell and fix.
Read fix Linux & VPSFix "Disk Quota Exceeded"
Your account limit, not the disk — how to free space.
Read fixWeb hosting & DirectAdmin
500 errors, DNS, domains and email deliverability — solved.
Fix "500 Internal Server Error"
.htaccess, permissions, PHP and memory — the common causes and fixes.
Read fix Web HostingPoint a Domain to Your Server (A Record)
How to set the A record — and why it isn't instant.
Read fix Web HostingFix Email Going to Spam (SPF, DKIM, DMARC)
Set all three records correctly so your mail reaches the inbox.
Read fix Web HostingFix "502 Bad Gateway"
The backend (usually PHP-FPM) failed — how to fix it.
Read fix Web HostingFix "504 Gateway Timeout"
The backend took too long — the causes and fixes.
Read fix Web HostingFix WordPress "Error Establishing a Database Connection"
Credentials, DB down or corruption — solved.
Read fix Web HostingFix the WordPress White Screen of Death
Reveal the error, then fix the plugin, theme or memory.
Read fix Web HostingFix "Not Secure" / SSL & Let's Encrypt Renewal
Expired certs, renewal failures and mixed content.
Read fix Web HostingFix "403 Forbidden"
Permissions, .htaccess or a missing index — the fixes.
Read fix Web HostingFix "Too Many Redirects" (ERR_TOO_MANY_REDIRECTS)
SSL/Cloudflare, WordPress URLs or htaccess loops.
Read fix Web HostingFix "413 Request Entity Too Large"
Raise the upload limit in nginx and PHP.
Read fix Web HostingFix Cloudflare Error 521 "Web Server Is Down"
Cloudflare can't reach your origin — here's why.
Read fix Web HostingFix FTP "530 Login Authentication Failed"
Credentials, host/port, passive mode and TLS.
Read fix Web HostingFix phpMyAdmin "Access Denied" / Can't Log In
It's a MySQL login problem — the fixes.
Read fixNetworking & connectivity
Port forwarding, timeouts, packet loss and finding your IP.
How to Port Forward for a Game Server
The steps, the ports, and why CGNAT can block it entirely.
Read fix NetworkingFix "Connection Timed Out" Joining a Server
How to tell whose side it is — and fix it.
Read fix NetworkingWhat Causes Packet Loss in Games
Rubber-banding and warping explained — how to test and fix it.
Read fix NetworkingHow to Find Your Server's IP and Port
Where to find them to share with friends — hosted or at home.
Read fix NetworkingFix "DNS_PROBE_FINISHED_NXDOMAIN"
A domain won't resolve — the DNS fixes, both sides.
Read fix NetworkingFix "ERR_CONNECTION_TIMED_OUT" in Your Browser
Tell if it's you or the server, and fix it.
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