GTA IV won't start: 'SecuLauncer failed to start application' error?
When I click play on GTA 4 (steam) I get the Rockstar Social Club login (which I can log in fine), but after that this shows up:

How do I fix this, so I can play the game?
Best Answer
From SecuROM's website:
Please note that this is a common issue when the Visual Studio C++ redistributable and/or Microsoft .NET Framework 3.5 was not installed properly.
To solve the issue, please open your Windows Explorer/My Computer and switch to the following directory on the 'Grand Theft Auto IV' Disc #1: e.g. E:\GTAIV\Redistributable.
If you own the Steam download version, please open your installation path of 'Grand Theft Auto IV': e.g. C:/Progra...steamapps/common/grand theft auto iv/installers.
In that folder you will find a file called 'vcredist_x86.exe'. Please execute this application and follow the installation wizard.
Please also download and install the latest version of Microsoft .NET Framework 3.5.
After you have successfully installed the Visual Studio C++ redistributable and Microsoft .NET Framework 3.5 please perform the recommended reboot. 'Grand Theft Auto IV' should start fine now.
Technically, this is something that Steam should have handled when you first ran it. But ensuring you have the correct dependencies installed should do the trick.
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How do you fix the SecuROM error in GTA 4?
Try them one by one or as they suit the problem you are facing.Can GTA IV run on Windows 10?
GTA IV will work on windows 10 once installed.Does GTA 4 work on Windows 10 64bit?
Answer: Minimum: OS: Windows 7 64 Bit Service Pack 1, Windows 8 64 Bit, Windows 8.1 64 Bit, Windows 10 64 Bit. Intel Core 2 Quad CPU Q6600 @ 2.40GHz (4 CPUs) / AMD Phenom 9850 Quad-Core Processor (4 CPUs) @ 2.5GHz.Where is GTA 4 config file?
Configuration file(s) locationSystemLocationWindows%LOCALAPPDATA% \\Rockstar Games\\GTA IV\\Settings\\SETTINGS.CFGSteam Play (Linux)<Steam-folder> /steamapps/compatdata/ 12210 /pfx/ [Note2]Jun 17, 202210 OVERLOOKED Mechanics in GTA 4 That'll Get You Playing Again
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Answer 2
I was having this problem as well even after installing the Visual C++ redistributable. Turns out the problem was that the game does not like being installed on a drive that has NTFS Compression enabled. So if you have it installed on a drive with compression enabled you'll need to move it.
Answer 3
Umm... I'm not sure id I should have this as an answer or a comment, but I managed to launch the game. I didn't do any fancy installing of any programs, I just waited about a week and tried playing it launching it again. It worked normally and now I'm playing GTA IV with no problems.
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Images: Ketut Subiyanto, Stas Knop, Miguel Á. Padriñán, Pixabay
