D5 Render Will Not Open

fmccaffrey · June 10, 2026, 1:26am

**D5 Render Version:**3.1
Graphics Card: NVIDIA GeForce RTX 4070
Driver Version: 13th Gen Intel(R) Core™ i7-13700, 2100 Mhz, 16 Core(s)
Issue Description:“System environment error. Please follor the tutorial to resolve the issue, or contact customer service.”
Screenshots/Videos Description:

Steps to Reproduce (optional):

Clov · June 10, 2026, 1:32am

Hi @fmccaffrey

Please send us the following:

System Information

2.11 System Info1280×768 302 KB
VRAM

2973×760 31.9 KB
Memory Speed

3975×761 29.4 KB

Were you able to follow the suggested steps that are mentioned in our user manual? If not, please try the following steps stated in this link:

Link: Why prompt ‘The program cannot be launched because of DLL errors…’ or ‘Program Startup Failed’? | User Manual
It is best to follow all of the steps thoroughly.

fmccaffrey · June 10, 2026, 1:39pm

Hi, Thank you for your quick response. I have followed those steps in the past and again yesterday. I also do not see the “Manage Display Mode” in the NVIDIA Control Panel. I will continue to follow these steps more closely in the meantime. Thank you.

fmccaffrey · June 10, 2026, 2:09pm

I will confirm I have tried everything in the link you have sent.

Clov · June 11, 2026, 1:03am

Hi @fmccaffrey

Just to clarify, this occurs to all files, right? Were you able to use D5 Render normally before? Were there any actions you have done, such as updates, that may have triggered this issue?

Are you opening a D5 File when you were checking your Task Manager? If so, it seems your iGPU is being used instead of your RTX GPU. If this is really the case, try disabling your iGPU temporarily and please ensure your monitor is connected to your RTX GPU

image1330×838 84.1 KB

Another suggestion:

Disable CPU overclocking and XMP profile

Enter your BIOS settings and disable CPU overclocking, as well as any XMP memory profiles. Reset these settings to their default values.

If the issue still persists, please send us your log files.

fmccaffrey · June 15, 2026, 1:21pm

Hi Clov,

I previously used the free version, but when I updated it, it started to not work. We have since decided to purchase it. After trying to re download it I continued to have the same issue. I will try you latest response next. If the issue persists I will reach out again. Thank you!

Clov · June 16, 2026, 12:58am

Hi @fmccaffrey

Alright, please do. Thank you.

fmccaffrey · July 13, 2026, 5:48pm

Hi @Clov It’s been a while, and I had it working. And now it wont even open d5. only the launcher opens, and when I click new file it won’t open. I’ve routed the correct graphics card to be used and it still doesn’t work. I believe this is above my pay grade lol. I’m at a loss.

Clov · July 13, 2026, 10:55pm

Hi @fmccaffrey

Could you please share how you were able to resolve this issue in the past?
Additionally, I’d appreciate it if you could let me know whether this problem affects all of your files or just specific ones.
Have there been any significant changes on your end that might have contributed to this issue, considering it was functioning well after our earlier conversation in the forum?
Lastly, were you able to try the suggestions I provided, such as disabling CPU overclocking?

fmccaffrey · July 14, 2026, 4:42pm

I first updated the Bios, then I went to graphics settings and specified which Graphics card D5 should use. But now it has stopped working again. It effects all files. It doesn’t even open D5. Only D5 Launcher will open. I tried downloading the new update as well. I will have to disable overlocking. I didn’t try it because it was working.

Other then that, no specific changes.