Why Install Delta Executor on PC?
If you're running Roblox on Windows, Delta Executor is the fastest and most stable way to inject and run custom Lua scripts. The PC build of Delta supports full UNC (Universal Naming Convention) compatibility, which means scripts that use the latest Roblox API surface run without errors. The PC build also has the fastest patch turnaround after Roblox updates — average 60 minutes — because Delta's injection engine is compiled natively for Windows rather than running through a compatibility layer like mobile builds do.
This guide walks you through the entire install on Windows 10 and Windows 11, including the SmartScreen warning that trips up most first-time users, the key system, and how to load and execute your first script. If you've used other executors before (Arceus X, Fluxus, Hydrogen, KRNL, Synapse X), you'll notice Delta's setup is noticeably faster — there's no emulator, no virtual machine, no BlueStacks. Just an EXE installer.
Before You Start
Make sure your PC meets the minimum requirements: Windows 10 64-bit (version 1909 or later) or Windows 11, 4 GB of RAM (8 GB recommended for Blox Fruits auto-farms that run multiple hours), and roughly 200 MB of free disk space for Delta plus its script cache. You'll also need a free Delta account — created automatically when you first launch the app and click "Get Key." No email or sign-up form is required.
Close Roblox completely before installing Delta. The injector needs to attach to a clean Roblox process. If you have Roblox Studio open, close that too. Disable any other Roblox executor (Arceus X, Synapse X, KRNL, Solar, etc.) — running two executors at the same time will cause injection conflicts and may flag your account faster.
Step 1 — Download the Official Delta Installer
Go to deltaexecutor.world/download and click the green "Download for PC" button. The file is called delta-setup.exe and is approximately 84 MB. Save it to your Desktop or Downloads folder.
Important: Only download from deltaexecutor.world. There are dozens of fake mirror sites — delta-executor.com, deltaexecutor.co, deltaexecutorapp.com, xdeltaexecutor.com — that distribute malware-laced installers. If a site asks you to complete a survey, install a "download helper," or enter your Roblox password before the download starts, close the tab. It's a scam.
Step 2 — Allow the Installer Through SmartScreen
When you double-click delta-setup.exe, Windows SmartScreen will almost certainly block the file with a blue screen that says "Windows protected your PC." This is a false positive. SmartScreen blocks any unsigned executable that hasn't built up enough reputation with Microsoft's cloud — and Delta, like every other Roblox executor, can't sign with a Microsoft-trusted certificate because Microsoft refuses to issue certificates to tools that violate another platform's Terms of Service.
To allow the installer: click "More info" (small text link below the warning message), then click "Run anyway." The installer will launch. This warning only appears the first few times you run Delta. After a few successful launches, SmartScreen stops flagging it.
Alternative: Add to Windows Defender Exclusions
If you find the SmartScreen warning annoying, you can add Delta's install folder to Windows Defender's exclusion list. Open Settings → Privacy & Security → Windows Security → Virus & Threat Protection → Manage Settings → Exclusions → Add an Exclusion → Folder. Add C:\Program Files\Delta Executor (or wherever you installed Delta). This is optional but recommended if you run long auto-farms and don't want Defender scanning in the background.
Step 3 — Run the Installer
Follow the on-screen prompts. The default install path is C:\Program Files\Delta Executor. We recommend keeping the default unless you have a specific reason to install elsewhere. The installer takes about 20-30 seconds to copy files and register dependencies. When it finishes, tick "Launch Delta Executor" and click Finish.
If the installer fails with a "Missing DLL" error, install the latest Microsoft Visual C++ Redistributable from Microsoft's official site and re-run the installer. This happens on about 3% of PCs — usually older Windows 10 machines that haven't been updated in a while.
Step 4 — Get Your Free Key
When Delta launches, you'll see the main window with a "Get Key" button at the top. Click it. Your default browser will open to the Delta key verification page. Complete the verification — it's a short browser-based check that takes about 30 seconds. Don't close the browser tab until you see a green "Verified" badge.
Copy the generated key, return to the Delta window, and paste it into the key input field. Click "Submit." The main UI unlocks. The key is tied to your hardware (HWID-locked), so the same key won't work on a different PC. Each key lasts 24 hours; Delta will auto-rotate to a new key when the current one expires. You don't have to manually re-verify.
What If the Key Page Doesn't Load?
Some antivirus programs block the key page because it uses a Linkvertise-style redirect. If the page doesn't load, disable your ad-blocker for that tab, or temporarily add the Delta key domain to your browser's allowlist. If you still can't get a key after two attempts, join the official Delta Discord and ping the support channel — usually someone will manually issue a key within a few minutes.
Step 5 — Attach Delta to Roblox
Open Roblox and join any game. Stay in the game for at least 10 seconds so the client fully loads. Alt-tab back to Delta and click the "Attach" button. You'll see a status message in the console that says "Injection successful" within 2-3 seconds. If injection fails, close Roblox completely, reopen it, and try again. About 1% of injects fail on the first attempt due to timing — this is normal.
Step 6 — Execute Your First Script
You have two options. Option A: open the Script Hub tab inside Delta, browse by game (start with Blox Fruits if you're new), and click "Load" on any script. The script loads into the editor automatically. Click "Execute" and watch it run in your Roblox game.
Option B: paste your own Lua script into the editor. If you're writing your own scripts, the editor supports syntax highlighting, line numbers, and a built-in Lua reference. Hit F5 or click Execute to run.
Common Problems & Fixes
"Injection failed" every time
Make sure Roblox is fully loaded (wait 10 seconds after joining a game before clicking Attach). If it still fails, restart both Roblox and Delta, then try again. If the problem persists, run Delta as Administrator — right-click the desktop shortcut → "Run as administrator."
Scripts don't do anything when executed
This usually means the script is for a different game than the one you're in. Switch to the right game, or load a different script. If a specific script stopped working after a Roblox update, check the Script Hub for a newer version — community contributors typically patch scripts within a few hours.
Delta won't launch after install
Delete the install folder, reinstall to a different path (e.g., C:\Delta), and run as Administrator. If it still won't launch, your antivirus is probably quarantining the EXE. Check your AV's quarantine list and restore the file.
Next Steps
You're ready to script. Browse the Delta Script Hub for 4,500+ verified scripts, or join the official Delta Discord to share scripts with the community and get help with custom Lua development. If you're coming from another executor, our vs Arceus X comparison and vs KRNL comparison are good reads.