What is the issue you’re having?
- Could not locate the Rockstar Games Launcher Process! If you are running it as administrator, please launch it as regular user.
-Win 11
-Rockstar launcher
I changed where Legacy is instaled, I think that was the start of the problem.
At first the problem was finding the instalation folder but now I re-installes fiveM and I get this error.
What have you tried already to fix the issue?
I made a clean re install, deliting all app temp folders.
The location on Citizen ini if the istalation folder is correct.
FiveM ask me to run rockstar launcher as NOT admin, but I dont know how, I already went into propieties for all the Launcher .exe and went to compatibility and is NOT marked as “run as admin”
I also re installed the launcher… idk guys… any idea?
What server did you get this issue on?
instaling fivem
Error screenshot(s)
Windows version
11 pro 25h2
System specifications
Procesador AMD Ryzen 5 5600X 6-Core Processor (3.70 GHz)
RAM instalada 32,0 GB
Tarjeta gráfica AMD Radeon RX 7900 GRE (16 GB)
Tipo de sistema Sistema operativo de 64 bits, procesador basado en x64
Antivirus software
win defender
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- Right-click both FiveM.exe and C:\Program Files\Rockstar Games\Launcher\Launcher.exe → Properties → Compatibility → uncheck “Run as administrator.” Also check the Compatibility tab on the shortcuts you actually click.
- Open Rockstar Games Manually Before openning FiveM
If this helped you Mark It As Solved!
Same issue here, adding my findings in case they help.
System: Windows 11, GTA V Legacy (Rockstar Games Launcher only — Steam copy fully uninstalled), FiveM latest version, Rockstar Launcher v1.0.106.2879
The core problem we diagnosed: FiveM’s ROSLauncher is looking for a service named RGSService which no longer exists in the current Rockstar Games Launcher. The installer now ships RockstarService.exe registered as “Rockstar Game Library Service” instead. FiveM loops waiting for RGSService for ~57 seconds then dies with Error 127, OR if Rockstar Service happens to be running it gets further but then fails ownership validation.
Relevant log excerpt:
[FiveM_ROSLaunc] Checking if it has socialclub.dll! Active? 1
[FiveM_ROSLaunc] MTL says it's signed in
[FiveM_ROSLaunc] Error: Could not validate game ownership! If you are running this as administrator, please launch it as regular user.
Everything we tried (none of it worked):
-
Confirmed not running as Administrator (FiveM, Rockstar Launcher, all exes — checked compatibility tab AND “settings for all users”)
-
Full nuke and reinstall of Rockstar Launcher (deleted %localappdata%\Rockstar Games, %programdata%\Rockstar Games, all registry keys)
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Full nuke and reinstall of FiveM
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Reinstalled GTA V Legacy via Rockstar Launcher (removed Steam copy entirely to eliminate dual-install ambiguity)
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Verified CitizenFX.ini IVPath points to correct Legacy install path
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Verified registry key HKLM\SOFTWARE\WOW6432Node\Rockstar Games\Grand Theft Auto V points to correct path
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Verified Steam account is linked to Social Club since 2015
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Time sync (Set time automatically enabled)
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DNS flush, cleared FiveM cache
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Manually created RGSService pointing at RockstarService.exe — service registers but won’t start (binary refuses to run as second instance since Rockstar Service is already running)
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Cloned Rockstar Service registry entry to RGSService — SCM sees it after reboot but still won’t start
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Confirmed Rockstar Service is Running at the time FiveM crashes — FiveM just doesn’t recognize it
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Attempted rollback to RSL v1.0.105.2733 — launcher auto-updated itself before we could test
Conclusion: FiveM is hardcoded to look for RGSService which Rockstar no longer ships. The ownership validation failure appears to be a separate but related issue affecting the current launcher version. This needs a FiveM-side fix.
PowerShell confirms RGSService does not exist:
Get-Service -Name "RGSService"
# Returns: Cannot find any service with service name 'RGSService'
Get-Service -Name "Rockstar Service"
# Returns: Rockstar Service | Running | Manual
FINALLY. Two days of PowerShell, nuked installs, registry hacks, and it was Windows Defender Controlled Folder Access the whole time. Incredible.
UPDATE — SOLVED
After two days of debugging, the root cause was Windows Defender Controlled Folder Access blocking SocialClubHelper.exe from writing to its renderer folder. This caused the Social Club auth token to never get written, resulting in the ownership validation failure.
The fix:
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Open Windows Security → Virus & threat protection
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Scroll down to Ransomware protection → click Manage ransomware protection
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Click Controlled folder access → Allow an app through Controlled folder access
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Add all of the following:
-
C:\Program Files\Rockstar Games\Social Club\SocialClubHelper.exe
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C:\Program Files\Rockstar Games\Launcher\Launcher.exe
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C:\Program Files\Rockstar Games\Launcher\RockstarService.exe
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C:\Program Files\Rockstar Games\Launcher\LauncherPatcher.exe
You can find blocked actions in Windows Security → History — look for “Protected folder access blocked” entries. That’s what tipped us off.
Note: the blocked action notification is rated “Low” severity by Windows so it’s easy to miss. Check your security history if you’re hitting this issue.
Two days of pulling my hair. Two days of considering just deleting windows and forgetting about FiveM. Linux is better honestly. But can’t play FiveM on Linux. Server runs fine there, but not the client.
