I see, this is the place where sometimes I changed the TDR value for D5 and Lumion. However, which files should I delete inside the registry before trying to re-install D5 again?
Wait a minute, while waiting for your reply, I noticed that you have windows 11.
I did a search on the D5 site, and there are cases where D5 is a bit unstable, maybe it’s better not to touch that field.
Reading this research, I realized that system 11 has small problems that can always be solved.
I would make an attempt to istal it from C to F, what do I mean.
If you have several disks on your brand new PC, that is, it is compartmentalized in C - D - F, where one is 500G, there is 1000G, etc. I would install it where it is more capacious, I would make a new PROGRAMS folder and install it. I’ll show you how I did it
I am using the latest official version of the software, the one listed on their official website. That is version 2.4.3.1708
I dont think the beta version with Dlss 3.0 is going to be useful for my pc, since that new version of dlss is only supported by rtx 40 series cards, and I have a 3090. I will try to download anyway to see if it works.
Would like to try out the help tool, but I cant even launch any scene, since they dont even load, not even a new one
It’s not just for the RTX 40 series version, but it starts from 20 then 30 is 40 because you certainly have DLSS3, i.e. the updated one.
However, if you understand that I am a colleague, I am not on the staff of D5.
Hope you fix the problem as soon as possible, this discussion helped you. 
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Hi again Riccardo, thank you so much for your help on this matter.
I just reinstalled D5 render on a diiferent drive of my pc, my 2tb F drive SSd, and I literally just got a Blue screen of death from windows 
.
The stop code is: DRIVER_IRQL_NOT_LESS_OR_EQUAL
WHAT FAILED: MpKsIDrv.sys
Sorry for the English the translator didn’t play a bad joke on me
displeasure me
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I indeed appreciate your help so much 
!
Lets see if any of this upcoming days somebody from the D5 staff can help me with this problem. Seems to be something really complicated
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Usually the installation that I did with my laptop, had no problems and I have window 10, maybe it’s 11 which has many system protections
But when you install D5 do you have the antivirus turned on both in window 11 and the one installed on the PC?
This is the latest idea that came, because I read it somewhere in the D5 forum
Usually the Antivirus can cause the installation to fail
Hi Riccardo,
I dont have any antivirus and disable real time protection on Windows Defender, and the same error remains . Dont really know what else I could do
Hi, sorry here in Italy it’s 2 in the morning, Yesterday in the last message I sent you I remembered the antivirus, which usually didn’t install the DLL file of the D5 program but blocked it, it saw it as a virus , see if it is quarantined in Defender, if there is, then click on it and give it the command not to block it. Once this is done, you must install D5 as an administrator, if it goes well, see if it goes well.
For the rest I don’t know what else to tell you, if things go wrong, I’m sure not, then you have to get the D5 staff to help you.
If everything you did didn’t work contact Oliver.J or Bruce.W they are great people they are good they are D5 staff
Now I say goodbye and close the laptop because I have to get some sleep. I’ll reopen it in a couple of hours, and I hope you fixed it
Hi mate, can we schedule a time for remote assistance?
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Hi friend. Thank you for your message, didnt see it at the time.
Is there a chance I could send you the zziplog created by the D5 support tool?
There seems to be multiple errors on the log file.
A couple of examples:
LogConsoleResponse: Display: Failed to find resolution value strings in scalability ini. Falling back to default.
LogPakFile: Display: Mounting pak file …/…/…/d5_immerse/Content/Paks/ls/43/1.pak.
LogPakFile: Corrupt pak PrimaryIndex detected!
I have pretty much tried everything (including doing a windows clean install and going back to Windows 10, but nothing solves the problem).
It seems that the memory frequency is not high. May I ask if you have updated your motherboard driver? Did you use any antivirus software?
You can refer to this blog with the links to find the solutions from other users.
Got notification of “Launch failure might be caused by system DLLs missing, try to repair it automatically?” or stop loading at 0% - Get Help / AnswerHub - D5 RENDER FORUM
Also, The log is incomplete, can you send us the full logs? support@d5techs.com
How to collect logs:
D5 Support Tool - Get Help / Tech Support - D5 RENDER FORUM
If all the trials above are useless, can we schedule a time for remote assistance?
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Hi Bruce, thank you for your response.
Is 3600 mhz not a decent frecuency for ddr4 memory? Those are 4 corsair vengeance rgb pro modules of 32 gb each, running at their factory speed. Weirdly D5 works on my older pc with 64 gb ram and a speed of 2133 mhz.
I havent updated my motherboard bios yet, would prefer to do that as a last resource.
And about antivirus, currently I dont have any kind of antivirus installed, only windows defender. I have even disabled windows defender real time protection to install D5, but the error still happens.
About the log, sure, I will attach to this message the full log:
zziplog.zip (179.7 KB)
Would really appreciate if you (or your team) could take a look at the log. I love this software and it is such a shame not be able to use it on my new computer.
From the log file, it appears that your computer has an integrated graphics card. You can try disabling the integrated graphics and see if that solves the problem. If not, we can schedule remote assistance.
recently i bought anew pc the same problem i had with d5 render . after some time i found that my ram frequency was the issue i changed the the ram frequency to auto and the problem solved . i think the problem start with one kind of NVidia exactly with the 4060 ti as i have . what make me sure about it it was that i built tow pc exactly the same parts just with different GPU the other one is with 4070ti and the d5 render run without any issue even without changing the ram frequency . i think some people problem will solve with this think .
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Thanks for your feedback, it is helpful.