Reinstalled FSX on my system back in February and experienced nothing but CTD's, usually within 15-25 minutes following take-off. I even posted here looking for help -

 

http://forum.avsim.n...-use-some-help/

 

As you can see, nothing seemed to have worked, that includes the dll I downloaded (against my better judgement I might add) and I eventually paid the price for that. I'm pretty PC literate, and I know damned well pulling dll files off the net is a terrible idea as they are typically loaded with a virus, this one was FYI. Long story shot, lengthy reformat process and OS install and I decided to give FSX one more try. Exact same CTD events on both my gaming laptop and desktop.

 

It dawned on me that while the current DirectX 11 drivers/software on Win7 are backwards compatible, FSX is not forwards compatible so to speak. That means that FSX is running in a native RTE associated with DX11, a RTE it was not designed to run on. I downloaded the DX 9.0c redistributable and installed it. At present, I've flown five medium to long distance flights, and I haven't had a single CTD since. Now, the drivers for 9.0c are different than that of DX 11, and it will not install over and or corrupt the default Windows 7 DirectX 11 installation.

 

I consider giving this a try before utilizing that horrendous option of downloading a dll. Extract the file to a new/empty folder on your desktop and utilize the installer.

 

http://download.cnet...4-10305889.html

 

Do not use the official Microsoft page, it'll simply direct you to the DX11 download as DX 9 is no longer supported as a driver based GPU application.

Been lurking on these forums for awhile looking for a solution to the CTD issue to no avail. The dll option had no impact whatsoever in fixing it.

 

But this works! I've been flying for the past thirty minutes and its running with no problems. Thank you for this!

No worries. I'm glad it helped. Ensure you have the DX RTE directed at the FSX directory.