Irrelevant. Those are two different libraries. Programs that require DirectX 9.0c do not care about DirectX 11, programs that require DirectX 11 do not care about DirectX 9.0c.

Yeah, as JMich says, DirectX 9 can install alongside DirectX 11 with no problems. DX9 is basically just for older games.

Thank you

I have a newer windows, when I install DirectX9 of a message that is not possible install

That's weird. It should work on any version of windows. What version of windows are you using? Can you tell us the exact error message you see?

I use windows 8.1
the message is

You must be running Windows 98, Windows Millennium Edition, Windows 2000, Windows XP or Windows Server 2003 family to install DirectX9.0.

I have installed DirectX 9.0c on Windows 7. I think it should work on 8.1 too, but maybe you need to download a different version for Windows 7/8? Where exactly did you download it from?

Try downloading form here:

http://www.microsoft.com/en-us/download/details.aspx?id=8109

Once it's downloaded, extract the contents to a folder, then run DXSETUP. It should work on any version of Windows.

Post back and tell us if that works.

the message directx 9 has been resolved but now the message:

"Warning! Minimum system requeriments not met!"

But I have a i7, gforce 2gb and 1T hd

There's a fix for this in the first post of this sticky thread. But that fix will limit your available graphics options, so you might also check this other thread:

http://www.gog.com/forum/the_witcher/fix_minimum_requirements_not_met_on_win7_x64

To quote from the youtube link, from the link from the post above...

for GOG.com
Go to your installation directory (..\The Witcher\System\) in there you have the file Witcher.exe, right click and create a shortcut.

Put the short cut on your desktop.

Right click on the shortcut, go to properties, Change the target to have the switch like this

Before switch :

"..\The Witcher\System\witcher.exe"

After switch:

"..\The Witcher\System\witcher.exe" -dontForceMinReqs

That's the fix that's in this sticky thread... I intended to link to the first post of that other thread, which has a different potential solution:

http://www.gog.com/forum/the_witcher/fix_minimum_requirements_not_met_on_win7_x64/post1

The problem is that by using -dontForceMinReqs, the game will only have limited graphics options, and can't go up to full detail. The fix in the above link, however, might work while still retaining graphics options. But I haven't tested it myself.

The fix I've come across for "Minimum system requirements not met!" is specific to Nvidia laptops such as my own. You have to go into the BIOS menu at boot and increase the internal RAM allotted to the integrated Intel graphics card. Then, once you've set the default graphics card to the dedicated Nvidia card in Nvidia Control Panel, the game will start normally without any need for the game's safe mode. Apparently, the integrated card is the only one being detected by the game at launch-time, but post-launch, the game acknowledges the existence of the dedicated Nvidia card.

TL;DR: The game now runs for me at near-max settings on my dedicated laptop graphics card.

The witcher keeps crashing on my computer. I've never had a problem with this game before then all of a sudden it would only launch in safe mode which I ignored as a problem. Now the game simply wont run, the farthest I've gotten was picking a save and loading when the game crashed and forced my computer to restart. I've updated every driver in my computer, and tried running it in windowed mode. Is there anything to fix this? Before any one says its my computer specs, they're fine I've run this game 60+ fps on max before it just recently started.

I'm not sure what this could be, unfortunately. Have you tried clearing out some of your old savegames? Having too many saves is known to slow the game down, although I'm not sure if it would crash it completely. The game is weird in that quicksaves just make new saves instead of overwriting old ones, so it's easy to accumulate a huge number.

Worth a shot. Anyone else know what might be happening?