Failed to load Web Browser

[killerkoffe]

Description of the bug

Failed to load web browser. Unable to log in.
Note: Prusaslicer opens links in my web browser no problem.

Project file & How to reproduce

1.) Configuration -> Configuration Wizard
2.) Log in
OR:
"log in" menu from GUI

Checklist of files included above

• Project file
• Screenshot

Version of PrusaSlicer

2.9.0

Operating system

Microsoft Windows 10 Pro Version 10.0.19045 Build 19045

Printer model

Original Prusa MK4s

[killerkoffe]

Launched from the console, I see this log:
[2025-01-12 17:25:57.820519] [0x00005bdc] [error] Failed to create wxWebView object.

[killerkoffe]

I used Process explorer to get more info.

Process	CPU	Private Bytes	Working Set	PID	Description	Company Name
prusa-slicer.exe	< 0.01	450,860 K	256,732 K	21440	PrusaSlicer	Prusa Research

DLLs

Name	Description	Company Name	Path
advapi32.dll	Advanced Windows 32 Base API	Microsoft Corporation	C:\Windows\System32\advapi32.dll
bcrypt.dll	Windows Cryptographic Primitives Library	Microsoft Corporation	C:\Windows\System32\bcrypt.dll
bcryptprimitives.dll	Windows Cryptographic Primitives Library	Microsoft Corporation	C:\Windows\System32\bcryptprimitives.dll
cfgmgr32.dll	Configuration Manager DLL	Microsoft Corporation	C:\Windows\System32\cfgmgr32.dll
clbcatq.dll	COM+ Configuration Catalog	Microsoft Corporation	C:\Windows\System32\clbcatq.dll
combase.dll	Microsoft COM for Windows	Microsoft Corporation	C:\Windows\System32\combase.dll
comctl32.dll	User Experience Controls Library	Microsoft Corporation	C:\Windows\WinSxS\amd64_microsoft.windows.common-controls_6595b64144ccf1df_6.0.19041.4355_none_60b8b9eb71f62e16\comctl32.dll
comdlg32.dll	Common Dialogs DLL	Microsoft Corporation	C:\Windows\System32\comdlg32.dll
CoreMessaging.dll	Microsoft CoreMessaging Dll	Microsoft Corporation	C:\Windows\System32\CoreMessaging.dll
CoreUIComponents.dll	Microsoft Core UI Components Dll	Microsoft Corporation	C:\Windows\System32\CoreUIComponents.dll
crypt32.dll	Crypto API32	Microsoft Corporation	C:\Windows\System32\crypt32.dll
crypt32.dll.mui	Crypto API32	Microsoft Corporation	C:\Windows\System32\en-US\crypt32.dll.mui
cryptbase.dll	Base cryptographic API DLL	Microsoft Corporation	C:\Windows\System32\cryptbase.dll
cryptnet.dll	Crypto Network Related API	Microsoft Corporation	C:\Windows\System32\cryptnet.dll
cryptsp.dll	Cryptographic Service Provider API	Microsoft Corporation	C:\Windows\System32\cryptsp.dll
d2d1.dll	Microsoft D2D Library	Microsoft Corporation	C:\Windows\System32\d2d1.dll
d3d11.dll	Direct3D 11 Runtime	Microsoft Corporation	C:\Windows\System32\d3d11.dll
DataExchange.dll	Data exchange	Microsoft Corporation	C:\Windows\System32\DataExchange.dll
dcomp.dll	Microsoft DirectComposition Library	Microsoft Corporation	C:\Windows\System32\dcomp.dll
devobj.dll	Device Information Set DLL	Microsoft Corporation	C:\Windows\System32\devobj.dll
dnsapi.dll	DNS Client API DLL	Microsoft Corporation	C:\Windows\System32\dnsapi.dll
drvstore.dll	Driver Store API	Microsoft Corporation	C:\Windows\System32\drvstore.dll
dwmapi.dll	Microsoft Desktop Window Manager API	Microsoft Corporation	C:\Windows\System32\dwmapi.dll
DXCore.dll	DXCore	Microsoft Corporation	C:\Windows\System32\DXCore.dll
dxgi.dll	DirectX Graphics Infrastructure	Microsoft Corporation	C:\Windows\System32\dxgi.dll
ExplorerFrame.dll	ExplorerFrame	Microsoft Corporation	C:\Windows\System32\ExplorerFrame.dll
FWPUCLNT.DLL	FWP/IPsec User-Mode API	Microsoft Corporation	C:\Windows\System32\FWPUCLNT.DLL
gdi32.dll	GDI Client DLL	Microsoft Corporation	C:\Windows\System32\gdi32.dll
gdi32full.dll	GDI Client DLL	Microsoft Corporation	C:\Windows\System32\gdi32full.dll
glu32.dll	OpenGL Utility Library DLL	Microsoft Corporation	C:\Windows\System32\glu32.dll
imagehlp.dll	Windows NT Image Helper	Microsoft Corporation	C:\Windows\System32\imagehlp.dll
imm32.dll	Multi-User Windows IMM32 API Client DLL	Microsoft Corporation	C:\Windows\System32\imm32.dll
IPHLPAPI.DLL	IP Helper API	Microsoft Corporation	C:\Windows\System32\IPHLPAPI.DLL
kernel.appcore.dll	AppModel API Host	Microsoft Corporation	C:\Windows\System32\kernel.appcore.dll
kernel32.dll	Windows NT BASE API Client DLL	Microsoft Corporation	C:\Windows\System32\kernel32.dll
KernelBase.dll	Windows NT BASE API Client DLL	Microsoft Corporation	C:\Windows\System32\KernelBase.dll
KernelBase.dll.mui	Windows NT BASE API Client DLL	Microsoft Corporation	C:\Windows\System32\en-US\KernelBase.dll.mui
libgmp-10.dll			C:\Program Files\Prusa3D\PrusaSlicer\libgmp-10.dll
libmpfr-4.dll			C:\Program Files\Prusa3D\PrusaSlicer\libmpfr-4.dll
locale.nls			C:\Windows\System32\locale.nls
msasn1.dll	ASN.1 Runtime APIs	Microsoft Corporation	C:\Windows\System32\msasn1.dll
msctf.dll	MSCTF Server DLL	Microsoft Corporation	C:\Windows\System32\msctf.dll
msimg32.dll	GDIEXT Client DLL	Microsoft Corporation	C:\Windows\System32\msimg32.dll
mskeyprotect.dll	Microsoft Key Protection Provider	Microsoft Corporation	C:\Windows\System32\mskeyprotect.dll
msvcp_win.dll	Microsoft® C Runtime Library	Microsoft Corporation	C:\Windows\System32\msvcp_win.dll
msvcp140.dll	Microsoft® C Runtime Library	Microsoft Corporation	C:\Program Files\Prusa3D\PrusaSlicer\msvcp140.dll
msvcp140_codecvt_ids.dll	Microsoft® C Runtime Library _codecvt_ids	Microsoft Corporation	C:\Program Files\Prusa3D\PrusaSlicer\msvcp140_codecvt_ids.dll
msvcrt.dll	Windows NT CRT DLL	Microsoft Corporation	C:\Windows\System32\msvcrt.dll
mswsock.dll	Microsoft Windows Sockets 2.0 Service Provider	Microsoft Corporation	C:\Windows\System32\mswsock.dll
ncrypt.dll	Windows NCrypt Router	Microsoft Corporation	C:\Windows\System32\ncrypt.dll
ncryptsslp.dll	Microsoft SChannel Provider	Microsoft Corporation	C:\Windows\System32\ncryptsslp.dll
nsi.dll	NSI User-mode interface DLL	Microsoft Corporation	C:\Windows\System32\nsi.dll
ntasn1.dll	Microsoft ASN.1 API	Microsoft Corporation	C:\Windows\System32\ntasn1.dll
ntdll.dll	NT Layer DLL	Microsoft Corporation	C:\Windows\System32\ntdll.dll
ntmarta.dll	Windows NT MARTA provider	Microsoft Corporation	C:\Windows\System32\ntmarta.dll
nvgpucomp64.dll	NVIDIA GPU Compiler Driver, Version 551.86	NVIDIA Corporation	C:\Windows\System32\DriverStore\FileRepository\nvmdig.inf_amd64_509c7440ad905b9c\nvgpucomp64.dll
nvoglv64.dll	NVIDIA Compatible OpenGL ICD	NVIDIA Corporation	C:\Windows\System32\DriverStore\FileRepository\nvmdig.inf_amd64_509c7440ad905b9c\nvoglv64.dll
ole32.dll	Microsoft OLE for Windows	Microsoft Corporation	C:\Windows\System32\ole32.dll
oleacc.dll	Active Accessibility Core Component	Microsoft Corporation	C:\Windows\System32\oleacc.dll
oleaccrc.dll	Active Accessibility Resource DLL	Microsoft Corporation	C:\Windows\System32\oleaccrc.dll
oleaut32.dll	OLEAUT32.DLL	Microsoft Corporation	C:\Windows\System32\oleaut32.dll
opengl32.dll	OpenGL Client DLL	Microsoft Corporation	C:\Windows\System32\opengl32.dll
powrprof.dll	Power Profile Helper DLL	Microsoft Corporation	C:\Windows\System32\powrprof.dll
profapi.dll	User Profile Basic API	Microsoft Corporation	C:\Windows\System32\profapi.dll
PrusaSlicer.dll			C:\Program Files\Prusa3D\PrusaSlicer\PrusaSlicer.dll
prusa-slicer.exe	PrusaSlicer	Prusa Research	C:\Program Files\Prusa3D\PrusaSlicer\prusa-slicer.exe
R00000000000d.clb			C:\Windows\Registration\R00000000000d.clb
rasadhlp.dll	Remote Access AutoDial Helper	Microsoft Corporation	C:\Windows\System32\rasadhlp.dll
rpcrt4.dll	Remote Procedure Call Runtime	Microsoft Corporation	C:\Windows\System32\rpcrt4.dll
rsaenh.dll	Microsoft Enhanced Cryptographic Provider	Microsoft Corporation	C:\Windows\System32\rsaenh.dll
RTSSHooks64.dll			C:\Program Files (x86)\RivaTuner Statistics Server\RTSSHooks64.dll
schannel.dll	TLS / SSL Security Provider	Microsoft Corporation	C:\Windows\System32\schannel.dll
sechost.dll	Host for SCM/SDDL/LSA Lookup APIs	Microsoft Corporation	C:\Windows\System32\sechost.dll
secur32.dll	Security Support Provider Interface	Microsoft Corporation	C:\Windows\System32\secur32.dll
setupapi.dll	Windows Setup API	Microsoft Corporation	C:\Windows\System32\setupapi.dll
SHCore.dll	SHCORE	Microsoft Corporation	C:\Windows\System32\SHCore.dll
shell32.dll	Windows Shell Common Dll	Microsoft Corporation	C:\Windows\System32\shell32.dll
shlwapi.dll	Shell Light-weight Utility Library	Microsoft Corporation	C:\Windows\System32\shlwapi.dll
SortDefault.nls			C:\Windows\Globalization\Sorting\SortDefault.nls
sspicli.dll	Security Support Provider Interface	Microsoft Corporation	C:\Windows\System32\sspicli.dll
StaticCache.dat			C:\Windows\Fonts\StaticCache.dat
TextInputFramework.dll	"TextInputFramework.DYNLINK"	Microsoft Corporation	C:\Windows\System32\TextInputFramework.dll
TextShaping.dll			C:\Windows\System32\TextShaping.dll
tiptsf.dll	Touch Keyboard and Handwriting Panel Text Services Framework	Microsoft Corporation	C:\Program Files\Common Files\microsoft shared\ink\tiptsf.dll
twinapi.appcore.dll	twinapi.appcore	Microsoft Corporation	C:\Windows\System32\twinapi.appcore.dll
ucrtbase.dll	Microsoft® C Runtime Library	Microsoft Corporation	C:\Windows\System32\ucrtbase.dll
umpdc.dll			C:\Windows\System32\umpdc.dll
user32.dll	Multi-User Windows USER API Client DLL	Microsoft Corporation	C:\Windows\System32\user32.dll
user32.dll.mui	Multi-User Windows USER API Client DLL	Microsoft Corporation	C:\Windows\System32\en-US\user32.dll.mui
uxtheme.dll	Microsoft UxTheme Library	Microsoft Corporation	C:\Windows\System32\uxtheme.dll
vcruntime140.dll	Microsoft® C Runtime Library	Microsoft Corporation	C:\Program Files\Prusa3D\PrusaSlicer\vcruntime140.dll
vcruntime140_1.dll	Microsoft® C Runtime Library	Microsoft Corporation	C:\Program Files\Prusa3D\PrusaSlicer\vcruntime140_1.dll
version.dll	Version Checking and File Installation Libraries	Microsoft Corporation	C:\Windows\System32\version.dll
win32u.dll	Win32u	Microsoft Corporation	C:\Windows\System32\win32u.dll
windows.storage.dll	Microsoft WinRT Storage API	Microsoft Corporation	C:\Windows\System32\windows.storage.dll
WindowsCodecs.dll	Microsoft Windows Codecs Library	Microsoft Corporation	C:\Windows\System32\WindowsCodecs.dll
winmm.dll	MCI API DLL	Microsoft Corporation	C:\Windows\System32\winmm.dll
winspool.drv	Windows Spooler Driver	Microsoft Corporation	C:\Windows\System32\winspool.drv
winsta.dll	Winstation Library	Microsoft Corporation	C:\Windows\System32\winsta.dll
wintrust.dll	Microsoft Trust Verification APIs	Microsoft Corporation	C:\Windows\System32\wintrust.dll
WinTypes.dll	Windows Base Types DLL	Microsoft Corporation	C:\Windows\System32\WinTypes.dll
wldp.dll	Windows Lockdown Policy	Microsoft Corporation	C:\Windows\System32\wldp.dll
ws2_32.dll	Windows Socket 2.0 32-Bit DLL	Microsoft Corporation	C:\Windows\System32\ws2_32.dll
wtsapi32.dll	Windows Remote Desktop Session Host Server SDK APIs	Microsoft Corporation	C:\Windows\System32\wtsapi32.dll

The following DLL is missing:
C:\Program Files\Prusa3D\PrusaSlicer\WebView2Loader.dll

This appears to be the problem. I have verified that the DLL exists, and is present on my computer, however it is not being loaded by prusa-slicer.exe.

I tried downloading 2.8.1, and I see the exact same issue.
WebView2Loader.dll is not being loaded by prusa-slicer.exe.

[killerkoffe]

I see where WebView2Loader.dll is copied, but I don't see anywhere WebView2Loader.dll is actually linked.

Can you add something like this:

add_library(WebView2Loader SHARED IMPORTED)
set_property(TARGET WebView2Loader PROPERTY IMPORTED_LOCATION "${CMAKE_CURRENT_BINARY_DIR}/${CONF}/WebView2Loader.dll")
target_link_libraries(PrusaSlicer WebView2Loader)

to here please:

PrusaSlicer/src/CMakeLists.txt

Lines 204 to 209 in 5c7888b

	if (SLIC3R_GUI)
	add_custom_command(TARGET PrusaSlicer POST_BUILD
	COMMAND ${CMAKE_COMMAND} -E copy
	"${wxWidgets_ROOT_DIR}/bin/WebView2Loader.dll"
	"${CMAKE_CURRENT_BINARY_DIR}/${CONF}/WebView2Loader.dll")
	endif()

Thanks

*Edit
See:
https://gitlab.kitware.com/cmake/community/-/wikis/doc/tutorials/Exporting-and-Importing-Targets

[TerPuc]

Dear @killerkoffe, thank you for you report. We will take a look at that.

Internal issue created: SPE 2643

[BlinkSTOP]

also reported similar on #14016

[kocikdav]

Hello @killerkoffe thanks for your suggestions.

We will check if the cmake regarding WebView2Loader.dll needs to be rewritten.

Meanwhile please check on your PC if Edge browser is installed. This issue might be similar as #13906 (comment). Also @BlinkSTOP I think missing Edge is very probably what is happening on your PC.

[MatyEjsr]

edge shouldnt be a requirement - its microsoft bloatware, reroute through firefox or chromium embeded

[Yigte]

This is how I solved the issue on my system.

#13906 (comment)