[Windows] How to run GTA:SA open.mp (non-Steam version)

[WG1337]

Info

What is this guide for?
- Windows users (this guide should work on most Windows versions)
- Almost any x86 hardware
- Will work for Steam and non-Steam users
- Those who have a "HOODLUM" version of the game and NOT the Steam version.

Note: Where to get the "HOODLUM" version? You will need to find it yourself. HINT

Steps

1) Get your GTA San Andreas ISO file on your computer

step1.png (45.68 KiB) Viewed 162 times

2) Right-click on the ISO file and select "Mount"

step2.png (68.81 KiB) Viewed 162 times

3) Open the mounted ISO file and run "setup,exe"

step3.png (82.75 KiB) Viewed 162 times

4) Press "Next"

step4.png (26.23 KiB) Viewed 162 times

5) Press "Next"

step5.png (79.87 KiB) Viewed 162 times

6) Select "I Accept" and press "Next"

step6.png (93.36 KiB) Viewed 162 times

7) Press "Yes"

step7.png (81.34 KiB) Viewed 162 times

8) Press "Next"

step8.png (82.19 KiB) Viewed 162 times

9) Press "Next"
Note: Do NOT change the installation path unless you know what you are doing!

step9.png (81.82 KiB) Viewed 162 times

10) Press "No"

step10.png (10.02 KiB) Viewed 162 times

11) Press "Yes" and wait for the installer to finish

step11.png (6.92 KiB) Viewed 162 times

12) Press "Next"

step12.png (84.42 KiB) Viewed 162 times

13) Press "Finish"

step13.png (79.76 KiB) Viewed 162 times

14) Open your mounted ISO file, open the "HOODLUM" folder and copy the "gta_sa.exe" file from that folder (Right-click and then select "Copy")

step14.png (51.27 KiB) Viewed 162 times

15) Open your GTA:SA folder (by default it is "C:\Program Files (x86)\Rockstar Games\GTA San Andreas") and paste the "gta_sa.exe" file in that folder. Replace any existing files.

step15.png (79.15 KiB) Viewed 162 times

16) Download ASI loader: https://github.com/ThirteenAG/Ultimate- ... -Win32.zip

17) Extract the "vorbisFile.dll" file from the downloaded ZIP file and copy it to "C:\Program Files (x86)\Rockstar Games\GTA San Andreas" folder, replace any existing files.

step16.png (49.04 KiB) Viewed 162 times

step17.png (83.69 KiB) Viewed 162 times

18) Download Modloader: https://github.com/thelink2012/modloade ... loader.zip

19) Extract the "modloader" folder and the "modloader.asi" file from the downloaded ZIP and copy it to "C:\Program Files (x86)\Rockstar Games\GTA San Andreas" folder

step18.png (50.53 KiB) Viewed 162 times

step19.png (79.23 KiB) Viewed 162 times

20) Download SilentPatch: https://github.com/CookiePLMonster/Sile ... atchSA.zip

21) Extract the "SilentPatchSA.asi" and "SilentPatchSA.ini" file from the downloaded ZIP and copy it to "C:\Program Files (x86)\Rockstar Games\GTA San Andreas" folder

step20.png (52.18 KiB) Viewed 162 times

step21.png (77.27 KiB) Viewed 162 times

22) Download WIdescreenFix: https://github.com/ThirteenAG/Widescree ... chived.zip

23) Extract the "GTASA.WidescreenFix" folder from the downloaded ZIP and copy it to "C:\Program Files (x86)\Rockstar Games\GTA San Andreas\modloader" folder

step22.png (49.07 KiB) Viewed 162 times

step23.png (53.77 KiB) Viewed 162 times

24) Download WidescreenFix HOR+: https://github.com/ThirteenAG/Widescree ... /wshps.asi

25) Copy the downloaded "wshps.asi" file to "C:\Program Files (x86)\Rockstar Games\GTA San Andreas\modloader\GTASA.WidescreenFix" folder

step24.png (59.33 KiB) Viewed 162 times

step25.png (60.36 KiB) Viewed 162 times

26) Create a new folder called "Project2DFX" in "C:\Program Files (x86)\Rockstar Games\GTA San Andreas\modloader" folder (Right-click, select "New", then select "Folder")

step26.png (70.19 KiB) Viewed 162 times

step27.png (67.21 KiB) Viewed 162 times

27) Download Project2DFX: https://github.com/ThirteenAG/III.VC.SA ... ct2DFX.zip

28) Extract all the files from the downloaded ZIP file and copy them to "C:\Program Files (x86)\Rockstar Games\GTA San Andreas\modloader\Project2DFX" folder

step28.png (71.71 KiB) Viewed 162 times

29) Create a new folder called "Ginput" in the "C:\Program Files (x86)\Rockstar Games\GTA San Andreas\modloader" folder (Right-click, select "New", then select "Folder")

step29.png (82.5 KiB) Viewed 162 times

30) Download Ginput: http://silent.rockstarvision.com/uploads/GInputSA.zip

31) Extract all the files from the downloaded ZIP file and copy them to the "C:\Program Files (x86)\Rockstar Games\GTA San Andreas\modloader\Ginput" folder

step30.png (52.39 KiB) Viewed 162 times

step31.png (60.9 KiB) Viewed 162 times

32) Download Framerate Vigilante: https://fileservice.gtainside.com/downl ... ilante.zip

33) Extract the "FramerateVigilante" folder to the "C:\Program Files (x86)\Rockstar Games\GTA San Andreas\modloader" folder

step32.png (51.38 KiB) Viewed 162 times

step33.png (57.16 KiB) Viewed 162 times

34) Open the "C:\Program Files (x86)\Rockstar Games\GTA San Andreas\modloader\Project2DFX\III.VC.SA.LimitAdjuster.ini" file using Notepad or any other text editor

step34.png (61.31 KiB) Viewed 162 times

35) Change the following lines so they match the following settings:

Code: Select all

FrameLimit = 60
MemoryAvailable = 1024
Vehicles = 200

36) Select "File", then select "Save as"

step35.png (43.31 KiB) Viewed 162 times

37) Save the file in a DIFFERENT location, for example, inside "Downloads", make sure you set Save as type: All files", then press "Save"

step36.png (75.71 KiB) Viewed 162 times

38) Copy the newly saved file and place it in the "C:\Program Files (x86)\Rockstar Games\GTA San Andreas\modloader\Project2DFX" folder. replace any existing files

step37.png (75.43 KiB) Viewed 162 times

step38.png (70.07 KiB) Viewed 162 times

39) Open the "C:\Program Files (x86)\Rockstar Games\GTA San Andreas\modloader\GTASA.WidescreenFix\scripts\GTASA.WidescreenFix.ini" file using Notepad or any other text editor

step39.png (62.7 KiB) Viewed 162 times

40) Change the following lines so they match the following settings:

Code: Select all

CarSpeedDependantFOV = 0.0

41) Select "File", then select "Save as"

step40.png (38.18 KiB) Viewed 162 times

42) Save the file in a DIFFERENT location, for example, inside "Downloads", make sure you set Save as type: All files", then press "Save"

step41.png (72.19 KiB) Viewed 162 times

43) Copy the newly saved file and place it in the "C:\Program Files (x86)\Rockstar Games\GTA San Andreas\modloader\GTASA.WidescreenFix\scripts" folder. replace any existing files

step42.png (72.46 KiB) Viewed 162 times

step43.png (61.58 KiB) Viewed 162 times

44) Open the "C:\Program Files (x86)\Rockstar Games\GTA San Andreas\modloader\Project2DFX\SALodLigjts.ini" file using Notepad or any other text editor

step44.png (72.35 KiB) Viewed 162 times

45) Change the following lines so they match the following settings:

Code: Select all

CoronaRadiusMultiplier = 0.3
MinDrawDistanceOnTheGround = 500
Factor1 = 5.0
TimedObjectsDrawDistance = 6000.0
LODObjectsDrawDistance = 6000.0
GenericObjectsDrawDistance = 500.0
AllNormalObjectsDrawDistance = 200.0
//NeonsDrawDistance = 0.0

46) Select "File", then select "Save as"

step45.png (37.9 KiB) Viewed 162 times

47) Save the file in a DIFFERENT location, for example, inside "Downloads", make sure you set Save as type: All files", then press "Save"

step46.png (71.25 KiB) Viewed 162 times

48) Copy the newly saved file and place it in the "C:\Program Files (x86)\Rockstar Games\GTA San Andreas\modloader\Project2DFX" folder. replace any existing files

step47.png (70.29 KiB) Viewed 162 times

step48.png (67.02 KiB) Viewed 162 times

49) Download SA-MP: https://gta-multiplayer.cz/downloads/sa ... nstall.exe

50) Run the SA-MP installer

step49.png (73.62 KiB) Viewed 162 times

51) Press "I Agree"

step50.png (25.04 KiB) Viewed 162 times

52) Press "Install"

step51.png (20.34 KiB) Viewed 162 times

53) Press "Finish"

step52.png (17.18 KiB) Viewed 162 times

54) Download open.mp launcher: https://github.com/openmultiplayer/laun ... -setup.exe

55) If experience the following error, then press "Resume"

step53.png (44.35 KiB) Viewed 162 times

56) Run the open.mp launcher installer

step54.png (77.43 KiB) Viewed 162 times

57) If you get the following notification, then press on it and read the second post below

step55.png (67.3 KiB) Viewed 162 times

58) Press "Next"

step56.png (18.81 KiB) Viewed 162 times

59) Press "Next"

step57.png (23.23 KiB) Viewed 162 times

60) Press "Install"

step58.png (22.42 KiB) Viewed 162 times

61) Press "Next"

step59.png (15 KiB) Viewed 162 times

62) Press "Finish:

step60.png (17.76 KiB) Viewed 162 times

63) If you get the following notification, then press on it and read the second post below

step61.png (73.93 KiB) Viewed 162 times

64) Run open.mp launcher by double clicking the desktop icon

65) Change the nickname and press the "+" button

step62.png (41.19 KiB) Viewed 162 times

66) Type in the server's address and press "Add"

step63.png (49.32 KiB) Viewed 162 times

67) Right click on the added server and press "Connect"

step64.png (92.15 KiB) Viewed 162 times

68) Select the latest SA-MP version (currently it is 0.3.7-R5) and press the button

step65.png (22.2 KiB) Viewed 162 times

69) You will be prompted that GTA San Andreas path is not set, press the "Open Settings" button

step66.png (13.89 KiB) Viewed 162 times

70) Press "Browse"

step67.png (31.83 KiB) Viewed 162 times

71) Browse to "C:\Program Files (x86)\Rockstar Games\GTA San Andreas" and press "Select folder"

step68.png (53.18 KiB) Viewed 162 times

72) Press the "X" button

step69.png (35.16 KiB) Viewed 162 times

73) Right click on the added server again and press "Connect"

step70.png (93.97 KiB) Viewed 162 times

74) It is possible you will get the following message, in such cases select "INI files: replace all and keep settings" and press "Restart this application with elevated permissions".
The single player mode will start up, but you should exit it and connect to the server using open.mp launcher again. This should not appear next time you run it.

step71.png (36.43 KiB) Viewed 162 times

[WG1337]

Dealing with Windows Defender

As of April 2026, Windows is preventing open.mp launcher from working. This will most likely be fixed in the future. For now, you will need to explicitly allow open.mp launcher in your Windows Defender.

To do this, follow these steps:
1) Either open the Windows Defender notification or open Windows Defender using Windows search

step55.png (67.3 KiB) Viewed 160 times

2) Press "Protection History"

steph1.png (89.16 KiB) Viewed 160 times

3) Look for the most recent entry and click on it

stepv2.png (53.37 KiB) Viewed 160 times

4) Make sure the entry does mention "omp-launcher", then press "Actions" and "Restore"

stepv3.png (98.29 KiB) Viewed 160 times

5) You may now try to run open.mp launcher (or installer) again.

6) If you receive the same notification again, open it, open the latest entry related to "omp-launcher", press "Actions" and then "Allow on device"

stepv4.png (96.53 KiB) Viewed 160 times

7) You may now try to run open.mp launcher (or installer) again.

8) You may need to repeat these steps again. Windows Defender will prevent the app from working in 3 different stages so you should expect to allow it 3 times
- during downloading (will ask you to restore the file)
- during installing (will ask you to allow the installer)
- during first run (will ask you to restore it)

[WG1337]

RESERVED