GTA IV FATAL ERROR: RMN20

ireckdor · 11-04-2011, 05:28 AM

"GTA IV FATAL ERROR: Windows Vista: Need to have Service Pack 1 or higher to proceed."

I'm not even using Windows Vista... it's Windows 7 Ultimate and can run other old games just fine...

It happens after I click 'play' on the Social Club sceen.

MonkeySeeker · 11-04-2011, 05:32 AM

Go to \Steam\steamapps\common\grand theft auto iv\GTAIV

Right click LaunchGTAIV.exe and click Properties
Click the Compatibility tab
Tick the "Run this program in compatibility mode for:" box
Select Vista SP1
Click Apply/OK

ireckdor · 11-04-2011, 05:40 AM

You must be a wizard! Thank you very much that seemed to do the trick!

firetut · 11-05-2011, 11:31 AM

I'm also having that problem, but I can't find the launchGTAIV.exe all I get is a GTAIV.exe.cdf...any help will do.

Okami Amaterasu · 11-05-2011, 12:57 PM

Scroll down a little, it is using the standard EXE icon rather than the GTA.EXE icon.

Admirnev91 · 07-28-2012, 10:02 PM

Other than making the game run with this solution, does this in anyway effect graphics/performance or anything else within the game?

MonkeySeeker · 07-29-2012, 02:07 AM

No it doesn't affect performance or anything else.

11-04-2011, 05:28 AM	#1
ireckdor Join Date: Nov 2010 Reputation: 86 Posts: 312	GTA IV FATAL ERROR: RMN20 "GTA IV FATAL ERROR: Windows Vista: Need to have Service Pack 1 or higher to proceed." I'm not even using Windows Vista... it's Windows 7 Ultimate and can run other old games just fine... It happens after I click 'play' on the Social Club sceen. Last edited by ireckdor: 11-04-2011 at 05:30 AM.

11-05-2011, 11:31 AM	#4
firetut Join Date: Oct 2011 Reputation: 0 Posts: 1	I'm also having that problem, but I can't find the launchGTAIV.exe all I get is a GTAIV.exe.cdf...any help will do. Last edited by firetut: 11-05-2011 at 11:43 AM.

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11-04-2011, 05:32 AM	#2
MonkeySeeker Join Date: Apr 2010 Reputation: 1256 Posts: 2,192	Go to \Steam\steamapps\common\grand theft auto iv\GTAIV Right click LaunchGTAIV.exe and click Properties Click the Compatibility tab Tick the "Run this program in compatibility mode for:" box Select Vista SP1 Click Apply/OK

11-04-2011, 05:40 AM	#3
ireckdor Join Date: Nov 2010 Reputation: 86 Posts: 312	You must be a wizard! Thank you very much that seemed to do the trick!

11-05-2011, 12:57 PM	#5
Okami Amaterasu Join Date: Jun 2010 Reputation: 20 Posts: 324	Scroll down a little, it is using the standard EXE icon rather than the GTA.EXE icon.

07-28-2012, 10:02 PM	#6
Admirnev91 Join Date: Apr 2012 Reputation: 0 Posts: 29	Other than making the game run with this solution, does this in anyway effect graphics/performance or anything else within the game?

07-29-2012, 02:07 AM	#7
MonkeySeeker Join Date: Apr 2010 Reputation: 1256 Posts: 2,192	No it doesn't affect performance or anything else.