# Julia can't find Qt6 DLL
**URL:** https://discourse.julialang.org/t/julia-cant-find-qt6-dll/129916
**Category:** New to Julia
**Tags:** installation, plots, qt, gr
**Created:** [June 16, 2025, 10:53am UTC](https://discourse.julialang.org/t/julia-cant-find-qt6-dll/129916 "2025-06-16T10:53:38Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@flewer](https://discourse.julialang.org/u/flewer)
#### Post date: [June 16, 2025, 10:53am UTC](https://discourse.julialang.org/t/julia-cant-find-qt6-dll/129916/1 "2025-06-16T10:53:38Z")
Hello,
This problem has been seen multiple times, however this has has not been resolved as far as I am aware.
When installing Plots by
```julia
using Pkg; Pkg.add("Plots")
```
the installation fails because of Qt6 library files not being found, even though there are present in the mentioned `.artifacts` subfolder.
```julia
✗ Qt6ShaderTools_jll
✗ GR_jll
✗ Qt6Declarative_jll
✗ GR
✗ Plots
✗ Plots → UnitfulExt
139 dependencies successfully precompiled in 155 seconds. 7 already precompiled.
6 dependencies errored. To see a full report either run `import Pkg; Pkg.precompile()` or load the packages
julia> Pkg.precompile()
Precompiling project...
✗ Qt6ShaderTools_jll
✗ GR_jll
✗ Qt6Declarative_jll
✗ GR
✗ Plots
✗ Plots → UnitfulExt
0 dependencies successfully precompiled in 37 seconds. 146 already precompiled.
ERROR: The following 1 direct dependency failed to precompile:
Plots [91a5bcdd-55d7-5caf-9e0b-520d859cae80]
Failed to precompile Plots [91a5bcdd-55d7-5caf-9e0b-520d859cae80] to "C:\\Users\\rs\\.julia\\compiled\\v1.9\\Plots\\jl_9782.tmp".
ERROR: LoadError: InitError: could not load library "C:\Users\rs\.julia\artifacts\762f4b366aa9d1f908b33813a6852d64a4d56bff\bin\Qt6Test.dll"
La procédure spécifiée est introuvable.
```
The last line can be translated by
`The speficied procedure could not be found.`
The `Qt6Test.dll` is present in the directory. Here’s the output of the DependencyWalker
```julia
julia> Library("C:\\Users\\rs\\.julia\\artifacts\\762f4b366aa9d1f908b33813a6852d64a4d56bff\\bin\\Qt6Test.dll")
◼ C:\Users\rs\.julia\artifacts\762f4b366aa9d1f908b33813a6852d64a4d56bff\bin\Qt6Test.dll
◼ C:\Julia-1.9.2\julia-1.9.2\bin\libwinpthread-1.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
✗ Qt6Core.dll (NOT FOUND)
◼ C:\Julia-1.9.2\julia-1.9.2\bin\libgcc_s_seh-1.dll
◼ C:\Julia-1.9.2\julia-1.9.2\bin\libwinpthread-1.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\Julia-1.9.2\julia-1.9.2\bin\libstdc++-6.dll
◼ C:\Julia-1.9.2\julia-1.9.2\bin\libwinpthread-1.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\Julia-1.9.2\julia-1.9.2\bin\libgcc_s_seh-1.dll
◼ C:\Julia-1.9.2\julia-1.9.2\bin\libwinpthread-1.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
```
The `Qt6Core.dll` library is in the same subfolder. I tried removing the subfolder and instantiating again, but this yields the same result. The DependencyWalker gives
```julia
julia> Library("C:\Users\rs\.julia\artifacts\762f4b366aa9d1f908b33813a6852d64a4d56bff\bin\Qt6Core.dll")
◼ C:\Users\rs\.julia\artifacts\762f4b366aa9d1f908b33813a6852d64a4d56bff\bin\Qt6Core.dll
◼ C:\WINDOWS\System32\ole32.dll
◼ C:\WINDOWS\System32\RPCRT4.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\combase.dll
◼ C:\WINDOWS\System32\RPCRT4.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\GDI32.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\USER32.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\GDI32.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
✗ MPR.dll (NOT FOUND)
◼ C:\Julia-1.9.2\julia-1.9.2\bin\libwinpthread-1.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\Julia-1.9.2\julia-1.9.2\bin\libgcc_s_seh-1.dll
◼ C:\Julia-1.9.2\julia-1.9.2\bin\libwinpthread-1.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\Julia-1.9.2\julia-1.9.2\bin\libstdc++-6.dll
◼ C:\Julia-1.9.2\julia-1.9.2\bin\libwinpthread-1.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\Julia-1.9.2\julia-1.9.2\bin\libgcc_s_seh-1.dll
◼ C:\Julia-1.9.2\julia-1.9.2\bin\libwinpthread-1.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\USER32.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\GDI32.dll
✗ AUTHZ.dll (NOT FOUND)
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\ADVAPI32.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\RPCRT4.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\sechost.dll
◼ C:\WINDOWS\System32\RPCRT4.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\bcrypt.dll
◼ C:\WINDOWS\System32\SHELL32.dll
◼ C:\WINDOWS\System32\msvcp_win.dll
◼ C:\WINDOWS\System32\GDI32.dll
◼ C:\WINDOWS\System32\USER32.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\GDI32.dll
◼ C:\WINDOWS\SYSTEM32\WINMM.dll
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\WS2_32.dll
◼ C:\WINDOWS\System32\RPCRT4.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
✗ VERSION.dll (NOT FOUND)
◼ C:\WINDOWS\System32\msvcrt.dll
◼ C:\WINDOWS\System32\KERNELBASE.dll
◼ C:\WINDOWS\System32\KERNEL32.DLL
◼ C:\WINDOWS\System32\KERNELBASE.dll
```
I can locate both a `mpr.dll` and a `authz.dll` in System32.
Any idea on how to solve this problem ?
Version info:
```julia
Julia Version 1.9.2
Commit e4ee485e90 (2023-07-05 09:39 UTC)
Platform Info:
OS: Windows (x86_64-w64-mingw32)
CPU: 12 × Intel(R) Core(TM) i7-10810U CPU @ 1.10GHz
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-14.0.6 (ORCJIT, skylake)
Threads: 1 on 12 virtual cores
```
---
### Author:  [@Ralph\_Smith](https://discourse.julialang.org/u/Ralph_Smith)
#### Post date: [June 16, 2025, 3:56pm UTC](https://discourse.julialang.org/t/julia-cant-find-qt6-dll/129916/2 "2025-06-16T15:56:02Z")
It appears that the library is actually found but fails to load because of linkage problems. I think the explanation is given in [this issue](https://github.com/JuliaPackaging/Yggdrasil/issues/11354), so the suggested solution is to upgrade to a supported version of Julia.
---
### Author:  [@giordano](https://discourse.julialang.org/u/giordano)
#### Post date: [June 16, 2025, 3:59pm UTC](https://discourse.julialang.org/t/julia-cant-find-qt6-dll/129916/3 "2025-06-16T15:59:46Z")
Yeah, most operating systems print to screen incredibly misleading and uninformative error messages: the file indicated in the error message is found, but it can’t be loaded because the dynamic loader can’t resolve a function referenced by that library, except the OS doesn’t tell you _which_ function (which it very well knows, since the dynamic loader was looking for it).
---
### Author:  [@flewer](https://discourse.julialang.org/u/flewer)
#### Post date: [June 16, 2025, 4:09pm UTC](https://discourse.julialang.org/t/julia-cant-find-qt6-dll/129916/4 "2025-06-16T16:09:40Z")
Thank you for your answers. Unfortunately, I don’t have sudo privileges and this Julia version is the only one I can have right now. I can try to send a request to the IT team, but I may never have an answer.
Alas, as hinted in the GitHub issue, it seems upgrading is the only way forward.
---
### Author:  [@ufechner7](https://discourse.julialang.org/u/ufechner7)
#### Post date: [June 16, 2025, 5:18pm UTC](https://discourse.julialang.org/t/julia-cant-find-qt6-dll/129916/5 "2025-06-16T17:18:47Z")
Try if ControlPlots.jl or PyPlot.jl works with Julia 1.9.
---
### Author:  [@flewer](https://discourse.julialang.org/u/flewer)
#### Post date: [June 16, 2025, 5:29pm UTC](https://discourse.julialang.org/t/julia-cant-find-qt6-dll/129916/6 "2025-06-16T17:29:42Z")
PyPlot is working fine and I have been using it since this problem.
However, I have made many scripts before that now needs to be adapted, which is time consuming. Not much I can do besides that I guess.
---
### Author:  [@ufechner7](https://discourse.julialang.org/u/ufechner7)
#### Post date: [June 16, 2025, 5:31pm UTC](https://discourse.julialang.org/t/julia-cant-find-qt6-dll/129916/7 "2025-06-16T17:31:40Z")
Are you on your local computer or on a HPC cluster? If you work locally, you do not need sudo priviledges to install Julia. Just use `juliaup` and you can install and run any Julia version from your home directory.
---
### Author:  [@flewer](https://discourse.julialang.org/u/flewer)
#### Post date: [June 16, 2025, 5:59pm UTC](https://discourse.julialang.org/t/julia-cant-find-qt6-dll/129916/8 "2025-06-16T17:59:37Z")
I am working on a local computer, but the Windows Store is also not available, which is the common install for `juliaup`. I just found the following: [Looking for feedback from users that currently can't install Juliaup from the Windows Store - #2 by davidanthoff](https://discourse.julialang.org/t/looking-for-feedback-from-users-that-currently-cant-install-juliaup-from-the-windows-store/85507/2)
Is this what you mean by “not needing sudo privileges” for `juliaup` ?
---
### Author:  [@joa-quim](https://discourse.julialang.org/u/joa-quim)
#### Post date: [June 16, 2025, 6:40pm UTC](https://discourse.julialang.org/t/julia-cant-find-qt6-dll/129916/9 "2025-06-16T18:40:30Z")
Use the portable version [https://julialang-s3.julialang.org/bin/winnt/x64/1.10/julia-1.10.9-win64.zip](https://julialang-s3.julialang.org/bin/winnt/x64/1.10/julia-1.10.9-win64.zip)
You only have to add the bin dir to your path (or just create an icon on desktop)