Windows 11 upgrade giving NT CRT DLL error


M

MRM

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We had one of our machines upgrade to Windows 11 and things appeared fine. One of the programs we use is Revit, which is a type of a CAD program from Autodesk. We have to keep several versions of this program as the files are not forward compatible. Two of the versions are giving a Window NT CRT DLL error. One version constantly gives the error where the other will do it a few times and stop.

We've tried a repair of Windows 11 as described here: Repair Install Windows 11 with an In-place Upgrade . These solutions did not fix the problems. We're trying to do what we can to avoid a fresh install of 11. Any recommendations would be appreciated.
 

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I see that the Autodesk forums didn't give you a fix.

Have you tried running the failing Revit versions in Compatibility mode?

I'm not optimistic that will help, but the effort level is minimal.

I suppose that you can't demand that your customers buy the current version of Revit. ;-)
 

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bobkn said:
I see that the Autodesk forums didn't give you a fix.

Have you tried running the failing Revit versions in Compatibility mode?

I'm not optimistic that will help, but the effort level is minimal.

I suppose that you can't demand that your customers buy the current version of Revit. ;-)
Click to expand...
They use all kinds of versions, so we have to as well. They won't let us take a '23 version and open it in '25. :( I'm not a fan of Revit, but that's another story in another forum.

I haven't tried the compatibility mode. I'll see what that does.
 

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Windows 11
Welcome to the forum. I saw you had posted on the Revit forum.. NT CRT DLL is Visual C Runtime. I'm sure each version of Revit is dependent on a particular Visual C Runtime version. Since you already tried a repair install, the only other suggestion I would have is to uninstall whichever Visual C packages are causing the error, restart, and then Reinstall them. Other than that, the advice you were given on the Revit forum of a clean install seems appropriate to me. It's doubtful anyone here runs Revit.

However, know that other applications also depend on particular Visual C packages in order to run as well. Personally, I know of no native way to find which app(s) use which versions of Visual C but I'm sure there are third party apps that can help.
 

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Just curious: you can't open a file from the 2023 version in 2025? I'd expect 2023 software could have issues with a file from a 2025 version, but the opposite direction seems like an, er, unusual design choice by Autodesk.
 

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    Windows 11 26200.8728Amd Threadripper 7970X128GB (4 X 32) G.Skill DDR5 6400 (RDIMM)Gigabyte RTX 4090 OC
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    windows 11 26200.8728Intel I9-13900K64GB G.Skill DDR5-6000Gigabyte RTX 3090 ti
    Operating System
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glasskuter said:
Welcome to the forum. I saw you had posted on the Revit forum.. NT CRT DLL is Visual C Runtime. I'm sure each version of Revit is dependent on a particular Visual C Runtime version. Since you already tried a repair install, the only other suggestion I would have is to uninstall whichever Visual C packages are causing the error, restart, and then Reinstall them. Other than that, the advice you were given on the Revit forum of a clean install seems appropriate to me. It's doubtful anyone here runs Revit.

However, know that other applications also depend on particular Visual C packages in order to run as well. Personally, I know of no native way to find which app(s) use which versions of Visual C but I'm sure there are third party apps that can help.
Click to expand...
Thanks. I'll see if I can find something.
 

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Windows 11
bobkn said:
Just curious: you can't open a file from the 2023 version in 2025? I'd expect 2023 software could have issues with a file from a 2025 version, but the opposite direction seems like an, er, unusual design choice by Autodesk.
Click to expand...
You can open '23 file in '25. But the way the program works is there is a central model that controls all aspects of the design. Meaning, the architect, electrical engineer, mechanical engineer, etc. all have access to the file. Once a person opens it in a new version, then all the others have to open it in that version as well. The architects like to control these models and don't want them opened in another version. It's dumb, but it's what we have to deal with.
 

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MRM said:
You can open '23 file in '25. But the way the program works is there is a central model that controls all aspects of the design. Meaning, the architect, electrical engineer, mechanical engineer, etc. all have access to the file. Once a person opens it in a new version, then all the others have to open it in that version as well. The architects like to control these models and don't want them opened in another version. It's dumb, but it's what we have to deal with.
Click to expand...
Thanks for the explanation.

If simply opening the file in a newer version marks it as newer, that seems a bit heavy handed.

Your last comment reminds me of an old joke that probably came out of MIT:

I was walking down the street the other day, and saw a shop sign offering Brains.

I went in, and saw a large jar marked Physicist's Brains, $5 per pound.

Next to it was a smaller jar marked Engineer's Brains, $15 per pound. I asked the clerk why so much, and he replied that you have to kill a lot more engineers to get a pound of brains.

Farther down the shelf was quite a large jar, marked Architect's Brains, $20 per pound. Why so much? "They've never been used."
 

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I ran the '23 version in capability mode. The NT CRT DLL error went away, but a new one popped up. It says "your SQL Server installation is either corrupt or has been tampered with (Unknown package id). Please uninstall then re-run setup to correct this problem."
 

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Windows 11
OS
Windows 11
MRM said:
We had one of our machines upgrade to Windows 11 and things appeared fine. One of the programs we use is Revit, which is a type of a CAD program from Autodesk. We have to keep several versions of this program as the files are not forward compatible. Two of the versions are giving a Window NT CRT DLL error. One version constantly gives the error where the other will do it a few times and stop.

We've tried a repair of Windows 11 as described here: Repair Install Windows 11 with an In-place Upgrade . These solutions did not fix the problems. We're trying to do what we can to avoid a fresh install of 11. Any recommendations would be appreciated.
Click to expand...
Hello, I was wondering you were ever able to find a fix for this issue. I have a user experiencing the same error. Thanks!
 

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11
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11
Computer type
Laptop
seems to be a known/common issue.

Revit 2023 error after Win11 update

One of my co-workers updated his machine from Windows 10 to 11. Since the update, he's getting an error message on Revit 2023. The message is Windows NT CRT DLL has stopped working. He gets this when opening the program and usually goes away after a few notifications. He gets it when opening a...
forums.autodesk.com forums.autodesk.com

try the fix here:
 

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Windows 11 Pro
OS
Windows 11 Pro
MRM said:
We've tried a repair of Windows 11 as described here: Repair Install Windows 11 with an In-place Upgrade . These solutions did not fix the problems. We're trying to do what we can to avoid a fresh install of 11. Any recommendations would be appreciated.
Click to expand...

glasskuter said:
However, know that other applications also depend on particular Visual C packages in order to run as well. Personally, I know of no native way to find which app(s) use which versions of Visual C but I'm sure there are third party apps that can help.
Click to expand...
The essential runtime libraries for Visual C++ can be found here - the 'Download' link will install any missing that you do not have.

Further information can befound here
 
Last edited:

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