RTCW cannot be played :(

[orienblu]

Hello guys. I need your help.

My RTCW cannot be ran on my PC

Popup message saying "Could not load OpenGL subsystem."

Before that, I reset graphic option to the highest level, which means I can access to the menu at first.

Can I do anything to fix this?

System requirements:
i9
RTX 4070
32 GB
Windows 11

[>M@tEo$<]

The part about resolution changed:
https://steamcommunity.com/sharedfiles/filedetails/?id=256261724

[Kritzburgh]

Steam Library --> rightclick Return to Castle Wolfenstein --> Properties --> Local Files tab --> Browse button --> open the "Main" folder in your "Return to Castle Wolfenstein" folder --> delete wolfconfig.cfg
After you delete your wolfconfig.cfg file following the instructions above, you will be able to boot up RTCW again. For the future, the highest resolution you should pick is 1024x768 (4:3). Anything after that will likely give you this same error again.

However, if you do want stable widescreen and native resolution support while you play, either the ioRTCW source port or the RealRTCW mod on Steam will give you that and more. The option you pick depends on how important a vanilla experience is for you, with RealRTCW being a faithful fan-made remaster, and the ioRTCW sourceport being 100% vanilla.
I'll post instructions for both of these below:

Option A) For starters, I would suggest giving RealRTCW a try on Steam. It's an excellent fan-made remaster that's very faithful to the original game, heavily customizable, and allows you to play at a modern widescreen resolution. If you play and complete the game through that mod, no one's gonna say you didn't beat the game as it doesn't change the level design or the core gameplay. The only changes from vanilla RTCW are some minor balance tweaks and new weapons added (which you can turn off in the Game Options by switching the weapon arsenal to Classic). For those who want as close to a vanilla experience as possible, there's also the option of downloading the Vanilla Plus DLC for the mod, which mainly adds back the default weapon models, sounds, and textures while keeping the quality of life improvements like widescreen support. Here's the link:
https://store.steampowered.com/app/1379630/RealRTCW/

Option B) However, if you're a total purist and want a 100% vanilla experience, then you're instead gonna want to download the sourceport for the game called ioRTCW.
You can basically think of ioRTCW as the GZDoom or Quakespasm equivalent for RTCW. This sourceport will also run even if your current Steam installation of RTCW doesn't. It will give you widescreen and native resolution support in the in-game options as well a few other quality of life features, but absolutely zero gameplay changes.
https://github.com/iortcw/iortcw/releases/tag/1.51c
Instructions: Download the correct zip file for your system from the Github link above. For example, if your system is a 64-bit Windows, then download "iortcw-1.51c-win-x64.zip". Using a program like WinRAR or 7zip, extract the files into your C:\Program Files (x86)\Steam\steamapps\common\Return to Castle Wolfenstein folder. When it asks you if you want to overwrite a readme file, just say Yes. Here is how your files should look in your Return to Castle Wolfenstein folder if you did everything right:
https://imgur.com/a/gMN3XdR
From there, you can simply doubleclick the "ioWolfSP" executable to open the game in the sourceport.

Hope this helps.

[orienblu]

Originally posted by >M@tEo$<:

The part about resolution changed:
https://steamcommunity.com/sharedfiles/filedetails/?id=256261724

Thank you guy. I fixed it! :)

[orienblu]

Thanks to all of you

Originally posted by Kritzburgh:

Steam Library --> rightclick Return to Castle Wolfenstein --> Properties --> Local Files tab --> Browse button --> open the "Main" folder in your "Return to Castle Wolfenstein" folder --> delete wolfconfig.cfg
After you delete your wolfconfig.cfg file following the instructions above, you will be able to boot up RTCW again. For the future, the highest resolution you should pick is 1024x768 (4:3). Anything after that will likely give you this same error again.

However, if you do want stable widescreen and native resolution support while you play, either the ioRTCW source port or the RealRTCW mod on Steam will give you that and more. The option you pick depends on how important a vanilla experience is for you, with RealRTCW being a faithful fan-made remaster, and the ioRTCW sourceport being 100% vanilla.
I'll post instructions for both of these below:

Option A) For starters, I would suggest giving RealRTCW a try on Steam. It's an excellent fan-made remaster that's very faithful to the original game, heavily customizable, and allows you to play at a modern widescreen resolution. If you play and complete the game through that mod, no one's gonna say you didn't beat the game as it doesn't change the level design or the core gameplay. The only changes from vanilla RTCW are some minor balance tweaks and new weapons added (which you can turn off in the Game Options by switching the weapon arsenal to Classic). For those who want as close to a vanilla experience as possible, there's also the option of downloading the Vanilla Plus DLC for the mod, which mainly adds back the default weapon models, sounds, and textures while keeping the quality of life improvements like widescreen support. Here's the link:
https://store.steampowered.com/app/1379630/RealRTCW/

Option B) However, if you're a total purist and want a 100% vanilla experience, then you're instead gonna want to download the sourceport for the game called ioRTCW.
You can basically think of ioRTCW as the GZDoom or Quakespasm equivalent for RTCW. This sourceport will also run even if your current Steam installation of RTCW doesn't. It will give you widescreen and native resolution support in the in-game options as well a few other quality of life features, but absolutely zero gameplay changes.
https://github.com/iortcw/iortcw/releases/tag/1.51c
Instructions: Download the correct zip file for your system from the Github link above. For example, if your system is a 64-bit Windows, then download "iortcw-1.51c-win-x64.zip". Using a program like WinRAR or 7zip, extract the files into your C:\Program Files (x86)\Steam\steamapps\common\Return to Castle Wolfenstein folder. When it asks you if you want to overwrite a readme file, just say Yes. Here is how your files should look in your Return to Castle Wolfenstein folder if you did everything right:
https://imgur.com/a/gMN3XdR
From there, you can simply doubleclick the "ioWolfSP" executable to open the game in the sourceport.

Hope this helps.

Thank you guy!

Yes I wanted higher resolution that is why the problem above occured at this time.

Your comment will give help when I apply the files above to Rtcw next time! I will try it sooner or later. :)