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TRAre KLauncher servers up?
Launcher won't download versions or modpacks? Check the status below first. If everything is green on our side — the problem is in your internet, and you can find it in 20 seconds right on this page.
Current status
Checking service status…
Check your internet in 20 seconds
The check knocks on the game servers right from your computer and shows which ones you can't reach. It installs nothing and changes nothing.
Run the check
Open your Downloads folder (or click the downloaded file in the browser's download bar) and double-click klnetcheck.bat. A black window opens — the check runs by itself in a couple of seconds and pauses so you can read the list of servers.
On both Windows 10 and 11 a blue “Windows protected your PC” window may pop up — that's normal for new unsigned files. Click “More info” → “Run anyway”.
Look at the result
The window shows a list of servers. Look at the start of each line:
[ OK ] — server reachable
Your computer reached this server. The numbers at the end of the line (200, 302, even 404) don't matter — any number means “the server answered”.
[FAIL] — no connection
There's the culprit: your computer can't reach this server. What to do is right below.
Got a FAIL? Fix it step by step
Do one step at a time, top to bottom. Re-run the check after each one — until the FAIL is gone:
Nothing helped? If you can, also test on a different connection — for example, mobile internet from your phone: that instantly shows whether it's your network or not. Still no luck — take a screenshot of the result window and message us: it shows exactly which server is unreachable, and we'll tell you what to do next in your specific case.
Why this happens
It's the network or your ISP
Sometimes the download servers are unreachable specifically through your connection — a routing glitch or limits on the provider's side. Changing DNS (step 2) or testing on a different connection often helps.
A home network glitch
Routers and Wi-Fi sometimes get stuck — some addresses stop opening until a reboot. That's why the first step is to restart the router.
Antivirus played it too safe
An antivirus or firewall sometimes mistakes the launcher for a threat and silently cuts off its internet.
An outage on our side
Rare, but it happens. You can see it in the status at the top of this page — if it's red, just wait, we're already on it.
The check runs on your own computer, so it shows your access to the servers. We can't see that from our side — we have access just fine.