First run
What happens the first time you launch Nimbus, and what you should expect to see.
What the loader does on first launch
When you double-click Nimbus.exe for the first time, it:
- Creates a
config/folder next to itself with default settings. - Reaches out to our version manifest at
https://getnimbus.net/api/manifest/versionto check whether your build is current. - Downloads the matching payload DLL (about 11 MB) into
payload/. This is the in-game overlay that gets injected after you sign in. - Opens the loader UI. You'll see four tabs across the top: Launch, Anti-Cheat, Spoof, Settings.
The whole sequence takes 5–10 seconds on a fresh install.
Antivirus prompt
The first launch is the one Defender is most likely to flag. The reason
is dull: SmartScreen has never seen this exact Nimbus.exe hash
before. Once the hash has rolled around the SmartScreen reputation
network for a few hours after each release, the prompts go away.
If you see a SmartScreen prompt, click More info then Run anyway.
If you see an actual Defender quarantine, see the Antivirus flagged it page.
Auto-update on launch
Every time you launch, the loader checks the version manifest and asks "is there a newer build?" If yes, you'll see a banner across the top of the loader UI:
A new build is available. Click here to install.
Old builds are the single biggest source of broken-inject tickets, and they elevate detection risk because anti-cheat already knows about the old payload's signatures. We strongly recommend you let the updater run.
You can opt out of auto-apply in Settings → Updates. You cannot opt out of being told a new build exists.