Alright, so you just installed GTA 4. You’re ready to cruise through Liberty City again. And then boom—this stupid error pops up and ruins everything. I remember staring at my screen for a good five minutes the first time it happened to me. Just… disbelief.
The “SecuLauncher failed to start application 2000” error comes from SecuROM. That’s the copy protection Rockstar bundled with the game back in the day. When something messes with how SecuROM checks your game files, it throws this error. Doesn’t tell you what’s actually wrong though. Of course not. That would be too easy.
This problem hits Windows 10 and Windows 11 users the hardest. Makes sense when you think about it. GTA 4 came out in 2008 for consoles, 2009 for PC. The game is literally ancient by tech standards. My PC wasn’t even built yet when this game launched.
Why Does This Keep Happening?
Spent way too many hours figuring this out over the years. Here’s what usually causes it:
- The xlive.dll file is missing or got corrupted somehow
- Games for Windows Live isn’t installed right (or at all)
- Your antivirus decided to eat important game files
- The game doesn’t have admin permissions
- Windows 10/11 just doesn’t play nice with old games
- Something went wrong during installation
- Random background programs interfering
The silver lining? Every single one of these has a fix. Trust me on this.
Fixes That Actually Work (I Tested All of These)
Fix 1: Run the Thing as Administrator
I know, I know. This sounds too simple. But hear me out—it works more often than you’d expect. SecuROM is picky about permissions. Really picky.
- Find your GTA 4 installation folder
- Right-click on LaunchGTAIV.exe
- Hit Properties
- Go to the Compatibility tab
- Check that “Run this program as an administrator” box
- Click Apply, then OK
- Do the exact same thing for GTAIV.exe
Real talk—this fixed it for about a third of the people I’ve helped with this error. Sometimes the simplest solution is the right one.
Fix 2: Compatibility Mode Is Your Friend
GTA 4 is old. Windows 11 is new. They don’t really understand each other. Compatibility mode basically tells Windows to pretend it’s an older system.
- Right-click LaunchGTAIV.exe
- Properties then Compatibility
- Check “Run this program in compatibility mode for:”
- Pick Windows XP (Service Pack 3) or Windows 7
- Also check “Disable fullscreen optimizations” while you’re there
- Do this for both the launcher and main game file
I’ve had better luck with Windows 7 mode personally. But honestly? Try both. See what works for your setup.
[Suggested Image: Windows Compatibility Settings dialog with recommended options highlighted]
Fix 3: Deal with Games for Windows Live
Ugh. Games for Windows Live. If you were gaming on PC back in the late 2000s, you probably just shuddered. This platform was a mess. Still is, kind of.
Rockstar eventually removed the GFWL requirement from newer versions. But older installations? Still need it.
- Download the Games for Windows Live redistributable from Microsoft
- Install the whole thing
- Restart your PC
- Try launching GTA 4 again
Quick note—if you’ve got the Steam version, check if it’s been updated to the Complete Edition. That version ditched GFWL entirely. Could save you some headache.
Fix 4: The xlive.dll Fix
This one comes up constantly in forums. And yeah, it works. The xlive.dll file handles all that GFWL integration stuff. When it’s missing or messed up, the game just refuses to start.
| Method | Difficulty | Success Rate |
|---|---|---|
| Download from official GFWL package | Easy | High |
| Copy from another working installation | Medium | Medium |
| Use community xlive.dll replacements | Easy | Very High |
People on GTAForums have made standalone xlive.dll files that skip the GFWL check completely. Game changer. Literally.
Word of warning: Scan any DLL files you download. Always. I don’t care where you got them from.
Fix 5: Your Antivirus Might Be the Problem
Here’s something that drove me crazy for like two weeks once. SecuROM does weird stuff that antivirus programs don’t like. Windows Defender, Norton, Avast—they’ll sometimes just… delete important game files. Won’t even tell you about it.
- Open whatever antivirus you use
- Turn off real-time protection temporarily
- Launch GTA 4
- Did it work? Add the game folder to your exclusions list
- Turn protection back on
I had Avast quarantining my xlive.dll for months before I figured it out. Felt like an idiot when I finally checked the virus chest. Just sitting there. Months.
Fix 6: Verify Your Game Files (Steam People Only)
Downloads get corrupted sometimes. It happens. Steam can fix this automatically though.
- Open Steam
- Right-click Grand Theft Auto IV
- Click Properties
- Go to Installed Files
- Hit Verify integrity of game files
- Wait
Steam checks everything and redownloads whatever’s broken. Takes a few minutes. Go grab a snack or something.
Fix 7: Nuclear Option—Clean Reinstall
When absolutely nothing else works. And sometimes nothing else works.
- Uninstall GTA 4 completely
- Delete any leftover files in the installation folder
- Delete the GTA 4 folder in your Documents too
- Run Disk Cleanup to clear temp files
- Restart your computer
- Reinstall everything
- Apply compatibility settings BEFORE you try launching
Takes longer but honestly? Sometimes you just gotta start fresh. The game’s been through a lot.
[Suggested Image: Folder structure showing GTA 4 directories to delete during clean reinstall]
Other SecuLauncher Errors (Because There’s Always More)
Error 2000 isn’t alone. SecuLauncher has a whole family of annoying error codes.
| Error Code | What’s Probably Wrong | Quick Fix |
|---|---|---|
| 2000 | SecuROM can’t verify the game | Compatibility mode + Admin rights |
| 2001 | DLL files are missing | Reinstall GFWL |
| 2002 | The game executable is corrupted | Verify files through Steam |
| 5000 | License verification failed | Run as administrator |
Good news is most of these errors respond to similar fixes. So the solutions above should help with pretty much any SecuLauncher problem you run into.
How to Stop This From Happening Again
After you fix this mess, a few habits help:
- Always run as administrator. Just make it default.
- Keep your game updated
- Add the game folder to your antivirus whitelist
- Don’t install mods until the base game works properly
- Check PC Gaming Wiki for community patches
Seriously, that PC Gaming Wiki page has saved me more times than I can count. Bookmark it.
Wrapping This Up
Look. GTA 4 is a great game that absolutely did not deserve the disaster of a PC port Rockstar gave us. The SecuROM protection was annoying in 2009. It’s even more annoying now. But these fixes work. I’ve used them myself. Helped other people use them. They work.
Still stuck after trying everything? Leave a comment with what’s happening. I check this stuff and try to help when I can.
Which fix ended up working for you? Run into any errors I didn’t cover? Drop it in the comments—might help somebody else dealing with the same thing.