"This application failed to start because no Qt platform plugin could be initialized" [Windows 10]

[gm649]

this one

Thank you very much, i installed those
x64: vc_redist.x64.exe
ARM64: vc_redist.arm64.exe
but it still not works

it seems that a system dll is missing

Edited:
hi again , i just updated my windows to latest version (Build 1909)
here is the log i found in event viewer :

Code: Select all

Faulting application name: xnviewmp.exe, version: 0.95.0.0, time stamp: 0x5e1ed246
Faulting module name: Qt5CoreXn.dll, version: 5.12.6.0, time stamp: 0x5dfe532a
Exception code: 0xc0000409
Fault offset: 0x00000000000284e8
Faulting process id: 0x27b4
Faulting application start time: 0x01d5f8ad93e66f06
Faulting application path: E:\Program Files\XnViewMP\xnviewmp.exe
Faulting module path: E:\Program Files\XnViewMP\Qt5CoreXn.dll
Report Id: 72c75dd0-b9e8-4d5f-8628-bb22849d8041
Faulting package full name: 
Faulting package-relative application ID: 

i searched and found this
https://www.minitool.com/news/0xc0000409.html
i haved tried it and it works
i post the solution here for anybody needs it
Thanks for the support

[pmblc]

Hello,

I get exactly the same issue on the latest version of Win10 Pro 64bits French version 1909 build 1863.752.

I have tried without success
- installing VC_redist.x64.exe
- sfc /scannow no problem detected

On [https://answers.microsoft.com/en-us/win ... 58ca69c0a4] they also suggest to use
DISM.exe /Online /Cleanup-image /Scanhealth
DISM.exe /Online /Cleanup-image /Restorehealth

Nothing was found to repair in Win10

Hope this can help to detect the problem ???

For the moment I'll keep using XnViewMP 094.2 (portable)

Regards

[xnview]

I get exactly the same issue on the latest version of Win10 Pro 64bits French version 1909 build 1863.752.

How do you have installed this version?

[pmblc]

Hello,
It's the portable version.
Comparing to the working version 0.94.2 I noticed that this version includes \plugins\platforms\qwindows.dll
so I created this folder in version 0.96 with a copy of qwindow.dll and it solved the problem.
Thanks your support.

[xnview]

Hello,
It's the portable version.
Comparing to the working version 0.94.2 I noticed that this version includes \plugins\platforms\qwindows.dll
so I created this folder in version 0.96 with a copy of qwindow.dll and it solved the problem.
Thanks your support.

you have not qwindows.dll in 0.96? which link do you have downloaded?

[oakside]

I am also receiving this error, but only when trying to open XnView MP from another app. Example: DupeGuru, which has convenient shortcut to open files "in default app", but 100% leads to this error. (As of a few months ago, it worked fine.) Note: Opening app or photos normally works fine (double click file, etc).

I tried with my old normal install, and new portable install, with same results. Also: No problems with SFC or DISM. Yes qwindows.dll is present in plugins folder. Versions: XnView MP 0.96.2 x64. Windows 10 Pro 1909.

[RakSrinaNa]

I am also receiving this error, but only when trying to open XnView MP from another app. Example: DupeGuru, which has convenient shortcut to open files "in default app", but 100% leads to this error. (As of a few months ago, it worked fine.) Note: Opening app or photos normally works fine (double click file, etc).

I tried with my old normal install, and new portable install, with same results. Also: No problems with SFC or DISM. Yes qwindows.dll is present in plugins folder. Versions: XnView MP 0.96.2 x64. Windows 10 Pro 1909.

Same here when opening with dupeguru.
Version 0.97.1 64bits (Oct 13 2020)
Windows 10 Pro 2004 (19041.572)

[xnview]

Version 0.97.1 64bits (Oct 13 2020)
Windows 10 Pro 2004 (19041.572)

If you start it directly no problem?

[RakSrinaNa]

Starting it from the windows menu or by opening a file from the explorer works fine.

[xnview]

Starting it from the windows menu or by opening a file from the explorer works fine.

I think that there is an incompatibility with Qt from DupeGuru

[RakSrinaNa]

Yeah probably something from their side. Running DupeGuru from the source code actually starts XnView fine without the error message.