Error: LoadImplementationWithFallback: no implementation loaded successfully, tried: VirtualDesktopWin11_22H2,VirtualDesktopWin11_Insider,VirtualDesktopWin11_21H2,VirtualDesktopWin10

[waldimen]

After upgrade of windows 11 I got following error:

I am connected to Windows Insider Programme in Dev channel.

LoadImplementationWithFallback: no implementation loaded successfully, tried: VirtualDesktopWin11_22H2,VirtualDesktopWin11_Insider,VirtualDesktopWin11_21H2,VirtualDesktopWin10
   at WindowsVirtualDesktopHelper.App..ctor()
   at WindowsVirtualDesktopHelper.Program.Main(String[] args)

Windows Build: 23466
Windows Release: 2009
Windows Product: Windows 10 Pro
Windows Version: 22H2
Windows Virtual Desktop Helper Version: 1.10.0.0
Virtual Desktop Implementation: VirtualDesktopWin11_22H2

Log:
GetImplementationForOS: Windows Build Version: 23466
GetImplementationForOS: Detected Windows 11 22H2 due to build >= 22621
LoadImplementationWithFallback: trying to load implementation VirtualDesktopWin11_22H2
LoadImplementation: Loading VDImplementation: VirtualDesktopWin11_22H2...
LoadImplementationWithFallback: failed to load VirtualDesktopWin11_22H2
LoadImplementationWithFallback: trying to load implementation VirtualDesktopWin11_Insider
LoadImplementation: Loading VDImplementation: VirtualDesktopWin11_22H2...
LoadImplementationWithFallback: failed to load VirtualDesktopWin11_Insider
LoadImplementationWithFallback: trying to load implementation VirtualDesktopWin11_21H2
LoadImplementation: Loading VDImplementation: VirtualDesktopWin11_22H2...
LoadImplementationWithFallback: failed to load VirtualDesktopWin11_21H2
LoadImplementationWithFallback: trying to load implementation VirtualDesktopWin10
LoadImplementation: Loading VDImplementation: VirtualDesktopWin11_22H2...
LoadImplementationWithFallback: failed to load VirtualDesktopWin10

[javiergarciad]

Same here!

[dankrusi]

Hi @waldimen , @javiergarciad ,

Does this version work for you?

Best,

-dan

WindowsVirtualDesktopHelper Executable v1.11.zip

[zobbo]

@dankrusi I am also on the insider build with the same error. Many thanks for taking a look at this so quickly. The new file gives me the following when I try to run it

LoadImplementationWithFallback: no implementation loaded successfully, tried: VirtualDesktopWin11_22H2,VirtualDesktopWin11_Insider,VirtualDesktopWin11_21H2,VirtualDesktopWin10
   at WindowsVirtualDesktopHelper.App..ctor()
   at WindowsVirtualDesktopHelper.Program.Main(String[] args)

Windows Build: 23466
Windows Release: 2009
Windows Product: Windows 10 Home
Windows Version: 22H2
Windows Virtual Desktop Helper Version: 1.11.0.0
Virtual Desktop Implementation: VirtualDesktopWin11_22H2

Log:
GetImplementationForOS: Windows Build Version: 23466
GetImplementationForOS: Detected Windows 11 22H2 due to build >= 22621
LoadImplementationWithFallback: trying to load implementation VirtualDesktopWin11_22H2
LoadImplementation: Loading VDImplementation: VirtualDesktopWin11_22H2...
LoadImplementationWithFallback: failed to load VirtualDesktopWin11_22H2
LoadImplementationWithFallback: trying to load implementation VirtualDesktopWin11_Insider
LoadImplementation: Loading VDImplementation: VirtualDesktopWin11_Insider...
LoadImplementationWithFallback: failed to load VirtualDesktopWin11_Insider
LoadImplementationWithFallback: trying to load implementation VirtualDesktopWin11_21H2
LoadImplementation: Loading VDImplementation: VirtualDesktopWin11_21H2...
LoadImplementationWithFallback: failed to load VirtualDesktopWin11_21H2
LoadImplementationWithFallback: trying to load implementation VirtualDesktopWin10
LoadImplementation: Loading VDImplementation: VirtualDesktopWin10...
LoadImplementationWithFallback: failed to load VirtualDesktopWin10

[dankrusi]

Can some try and see if this works for them (VirtualDesktopInsider.exe)? https://github.com/MScholtes/VirtualDesktop/releases/tag/V1.12

This would let me know if somehow has figured out the API entry points yet...

[zobbo]

@dankrusi - when I try to run it on the command line I get the following:

C:\Users\icott\Downloads>VirtualDesktopInsider.exe /list

Unhandled Exception: System.TypeInitializationException: The type initializer for 'VirtualDesktop.DesktopManager' threw an exception. ---> System.InvalidCastException: Specified cast is not valid.
   at VirtualDesktop.IServiceProvider10.QueryService(Guid& service, Guid& riid)
   at VirtualDesktop.DesktopManager..cctor()
   --- End of inner exception stack trace ---
   at VirtualDesktop.Desktop.get_Count()
   at VDeskTool.Program.Main(String[] args)

[dankrusi]

@zobbo - thanks. Damn I'm not sure if someone has reverse engineered your version yet. I will try to find out the GUID for the API calls, but it will take a while...

[javiergarciad]

V 1.12 not working on this machine.

OS Name Microsoft Windows 11 Pro Insider Preview Version 10.0.23466 Build 23466 Other OS Description Not Available OS Manufacturer Microsoft Corporation System Name LATITUDE System Manufacturer Dell Inc. System Model Latitude 7390 System Type x64-based PC System SKU 081B Processor Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz, 2112 Mhz, 4 Core(s), 8 Logical Processor(s) BIOS Version/Date Dell Inc. 1.30.0, 20/11/2022 SMBIOS Version 3.1 Embedded Controller Version 255.255 BIOS Mode UEFI BaseBoard Manufacturer Dell Inc. BaseBoard Product 0C50DC BaseBoard Version A00 Platform Role Mobile Secure Boot State Off PCR7 Configuration Elevation Required to View Windows Directory C:\WINDOWS System Directory C:\WINDOWS\system32 Boot Device \Device\HarddiskVolume1 Locale United States Hardware Abstraction Layer Version = "10.0.23466.1001" User Name LATITUDE\Javier Time Zone SA Pacific Standard Time Installed Physical Memory (RAM) 16,0 GB Total Physical Memory 15,9 GB Available Physical Memory 5,12 GB Total Virtual Memory 31,9 GB Available Virtual Memory 17,5 GB Page File Space 16,0 GB Page File C:\pagefile.sys Kernel DMA Protection Off Virtualization-based security Running Virtualization-based security Required Security Properties
Virtualization-based security Available Security Properties Base Virtualization Support, DMA Protection, UEFI Code Readonly, Mode Based Execution Control Virtualization-based security Services Configured Hypervisor enforced Code Integrity Virtualization-based security Services Running Credential Guard, Hypervisor enforced Code Integrity Windows Defender Application Control policy Enforced Windows Defender Application Control user mode policy Off Device Encryption Support Elevation Required to View A hypervisor has been detected. Features required for Hyper-V will not be displayed.

[waldimen]

Hello,

I got following error when I tried to run:

VirtualDesktopInsider.exe /list

Unhandled Exception: System.TypeInitializationException: The type initializer for 'VirtualDesktop.DesktopManager' threw an exception. ---> System.InvalidCastException: Specified cast is not valid.
   at VirtualDesktop.IServiceProvider10.QueryService(Guid& service, Guid& riid)
   at VirtualDesktop.DesktopManager..cctor()
   --- End of inner exception stack trace ---
   at VirtualDesktop.Desktop.get_Count()
   at VDeskTool.Program.Main(String[] args)

[zobbo]

Not sure if this helps at all as although I'm a programmer of 35 years, the arcane world of windows is outside of my current remit (thankfully!)

https://github.com/MScholtes/VirtualDesktop/issues/46

The issue there has a comment:

I'm tired of cat-and-mouse game with Microsoft. I've made a script to download and analyze PDB symbols to automatically extract GUID and some COM method.

and a link to https://github.com/NyaMisty/GetVirtualDesktopAPI_DIA

I am a python programmer (but not normally on windows). If it aids the quest I can try and get it running and see what it says although once again, I'm not sure if this a red herring!

Missing your little utility at the moment! :)

Ian

[dankrusi]

@zobbo , perfect thanks! Yes please do run it and let me know. I will provide you a build. Later when I have time I will try to integrate this technique into the app itself so that you can automatically submit the data to me. Best, -dan

[ladle3000]

Also on win11 release preview channel for insider builds. App is crashing once in a while and just restarting it makes it work for a while. I'll copy the error here next time I see it.

I did notice before the first time it happened, it showed I was on a different window number then I was really on, then moments later crashed for the first time.

[zobbo]

Surprised restarting makes it work for you as it just totally dies here. I'm currently stuck with the util I was looking at to try and help with the debugging. I can't seem to get it to run because of the dll registration error I noted last week. Somebody else has the same issue. If any windows programmers have any insights I'd greatly appreciate it.

[MScholtes]

Microsoft did a strange thing with Windows 11 Insider Dev: they lowered the build number from 25309 to 23403 on March 8, 2023. That's weird.

Version checking might need to be corrected.

[dankrusi]

@MScholtes thanks for the heads up. This is updated in v1.11, however since the app uses a fallback system where it tries every implementation possible, it shouldn't fix the issue for insider dev users...

[zobbo]

Confirmed, no change for the insider dev users

[rldourado]

@dankrusi , v1.12 worked for me.

Windows 11 Pro Version 22H2 Build 22621.2215