failed with exception ='System.TypeLoadException on .NETFramework 4.6.2 #946

bunki-tou · 2021-02-17T04:15:43Z

Description
My WebView2 Application(WinForms) failed with exception ='System.TypeLoadException on .NETFramework 4.6.2.

*stack trace
System.TypeLoadException: Could not load type 'System.Runtime.InteropServices.Architecture' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
at Microsoft.Web.WebView2.Core.CoreWebView2Environment.LoadWebView2LoaderDll()
at Microsoft.Web.WebView2.Core.CoreWebView2Environment.d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Web.WebView2.WinForms.WebView2.d__14.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at biz.harmomedicalinstitution.cardreader.view.MainForm.d__12.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<>c.b__6_0(Object state)

Version
SDK: 1.0.7.5.50
Runtime: both 88.0.705.68 and 87.0.664.75
Framework: WinForms .NETFramework4.6.2 (update from 4.5.1)
OS: WindowsServer2012R2　（hyper-v）
hostOS：Windows10Pro 20H2
WebView2Sample.zip

Repro Steps

update .NetFramework vesion to 4.6.2 from 4.5.1. using Web Installer.
Evergreen Standalone Install
My WebView2 Application starts.
failed TypeLoadException .

Screenshots

Additional context
#864 is similar to this.

AB#31786125

champnic · 2021-02-18T01:36:29Z

Hey @bunki-tou - thanks for the bug report. It looks like we may have inadvertently taken a dependency on an API not available in .NET 4.6.2. Can you try 4.7.1 and see if this error goes away? If it does that will confirm my suspicion and we'll have to investigate fixes on our end.

bunki-tou · 2021-02-18T02:22:23Z

@champnic Thanks for reply to my report.
I tried to do on updating 4.7.1 , and this error goes away. I think that webview2 may be not available in .NET 4.6.2, because it's using 'System.Runtime.InteropServices.Architecture' .

juergenil · 2021-02-18T09:19:35Z

Same behaviour here. We have a customer with some Windows 10 2015 LTSB installations. Highest framework version, which can be installed is 4.6.2. So he can't update to 4.7.1. As a result WebView2 ist not usable in this environment, although documentation states, it should be possible.

champnic · 2021-02-19T22:58:30Z

That's disappointing, sorry you're blocked by this. I've added this bug to our backlog and we'll try and get this fixed soon!

bunki-tou · 2021-02-20T02:36:57Z

Thanks for confirmig quickly. I'm looking forward to fix this!

paolodel · 2021-05-04T12:44:30Z

Hi, I have the same need about WebView2. We have some equipments with Windows 10 2015 LTSB.
I have tried to use prerelease version 1.0.865, now exception is received through CoreWebView2InitializationCompleted event and it changed to

Dependency on .NET 4.7 is still present

champnic · 2021-05-04T23:01:40Z

Thanks for the update - I've added this info and re-opened the bug.

dianaqu · 2021-05-13T06:35:39Z

Hi @bunki-tou,

Going back to read your description. It seems you mean that version 4.5.1 was working for you and only updating to 4.6.2 caused the issue? Would you mind confirm that it works for 4.5.1?

juergenil · 2021-05-13T11:38:08Z

@dianaqu The cause of the TypeLoadExceptions, shown in the previous StackTraces, are missing types System.Runtime.InteropServices.Architecture and System.Runtime.InteropServices.RuntimeInformation. Both were introduced in .NET Framework 4.7.1. So for my understanding it's impossible to run neither with 4.5.1 nor with 4.6.2.

bunki-tou · 2021-05-13T12:03:27Z

@dianaqu
No, it's not working on 4.5.1.
So, this exception causes not only updating to 4.6.2.

Tennyleaz · 2021-05-24T03:22:16Z

I also got TypeLoadExceptions on .Net 4.6.2, webview2 version 1.0.818.41.
Only solution now is to downgrade webview2 version to 0.9.579-prerelease.

dianaqu · 2021-06-08T03:37:58Z

Hi folks on this thread.
I have a potential fix, but I been having trouble obtaining a repo machine. Would anyone on the thread mind helping verify the fix?
test.zip

@Tennyleaz @bunki-tou @juergenil @paolodel

bunki-tou · 2021-06-15T08:51:52Z

@dianaqu Thank you.
I verified this package, but this also occurred TypeLoadException which is the same exception before the fix

************** 例外テキスト **************
System.TypeLoadException: アセンブリ 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' から型 'System.Runtime.InteropServices.Architecture' を読み込めませんでした。
   場所 Microsoft.Web.WebView2.Core.CoreWebView2Environment.LoadWebView2LoaderDll()
   場所 Microsoft.Web.WebView2.Core.CoreWebView2Environment.<CreateAsync>d__3.MoveNext()
--- 直前に例外がスローされた場所からのスタック トレースの終わり ---
   場所 System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   場所 System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   場所 System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   場所 WebView2_Sample.Form1.<WebView2Init>d__1.MoveNext()
--- 直前に例外がスローされた場所からのスタック トレースの終わり ---
   場所 System.Runtime.CompilerServices.AsyncMethodBuilderCore.<>c.<ThrowAsync>b__6_0(Object state)

yudaming · 2021-07-09T13:37:49Z

System.TypeLoadException:“未能从程序集“mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089”中加载类型“System.Runtime.InteropServices.RuntimeInformation”。”

dianaqu · 2021-07-16T01:10:38Z

@bunki-tou @juergenil @paolodel @yudaming
Hi folks, I been having trouble obtain a repo machine, is there anyway possible any of you share a repo VM for me to test around it?

gpsaliola · 2021-07-20T12:51:44Z

Hello,
I've the same issue with webview2 latest version (1.3.143.57 ) on Windows 7 and Framework 4.5.
The same app works fine on Windows 10.
Can somebody help me please?
Thank you.

dianaqu · 2021-07-20T13:16:10Z

Hi @gpsaliola , Do you happen to have a repo machine that I can try to access?

gpsaliola · 2021-07-20T13:17:51Z

I'm sorry, no. I'm tested my app on a virtual machine created with VirtualBox.
On my main machine (Windows 10) works fine.
May be a problem concerned with missing "Extended Security Updates for Windows 7"?

bunki-tou · 2021-07-21T02:52:18Z

@dianaqu I'm sorry. I can't share my repo VM , because many development Apps were installed in this VM.

@juergenil @paolodel @yudaming
Can you share your repo VM to @dianaqu ?

paolodel · 2021-07-21T05:58:24Z

@dianaqu, Sorry, I can't give you access to our single equipment with Windows 10 2015 LTSB.
It's inside our R&D department and it's not accessible from outside.
Unfortunately I have no repo VM, only this real equipment.

gpsaliola · 2021-07-21T07:35:21Z

I've create a simple example that runs on Windows 10 but crash in Windows 7.
You can download here: https://www.okmap.org/test.zip.
Thank you!

gpsaliola · 2021-07-23T10:36:03Z

I saw on the Microsoft site that the RuntimeInformation class (which fails to load) has Framework 4.7.1 or higher as prerequisites. Could this be the problem since my app was compiled for Framework 4.5?

champnic · 2021-07-23T23:34:21Z

That is indeed the crux of the issue, so we're working on a workaround for those RuntimeInformation properties that gives us the same info. The problem is not that your app was compiled for 4.5, but rather that it's being run with a .NET runtime that doesn't have the RuntimeInformation implementation (like 4.5 or 4.6). A workaround to get unblocked is to install a newer .NET runtime on the machines, or yes, to target a newer framework (these are not always options though, as described by other users above).

gpsaliola · 2021-07-24T09:53:05Z

Thanks for the explanation.
I switched to 4.7.2 and everything seems to be working fine.
However I have some dlls that I have left at 4.5.
I wonder if this is an acceptable practice; do you think it is better that I also recompile all the dlls to version 4.7.2?
One last question ... How can you determine if WebView2 is installed (with Inno for example)?

champnic · 2021-07-26T17:32:14Z

@gpsaliola Please see step 1) here:
https://docs.microsoft.com/en-us/microsoft-edge/webview2/concepts/distribution#online-only-deployment
You can check a regkey or use GetAvailableCoreWebView2BrowserVersionString API to determine if WebView2 is installed.

It should be fine to have mixed dll versions. The only issue would be if you tried to run your app on a machine that only had a runtime < 4.7.2 and wasn't connected to the internet or able to update their runtime.

gpsaliola · 2021-07-27T07:21:11Z

thanks, this solves my problem.
I wrote a little script for Inno Setup, it might be useful for other developers:

function WebView2Installed(): Boolean;
  var
    pv: String;
    key: String;
  begin
    Result := False;
    if IsWin64 then begin
      key := 'SOFTWARE\WOW6432Node\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}';
    end else
    begin
      key := 'SOFTWARE\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}';
    end;
    if RegQueryStringValue(HKEY_LOCAL_MACHINE, key, 'pv', pv) then begin
      Result := True;
    end;
  end;

drearyrainDeng · 2021-08-30T10:14:08Z

we got the same error . just netframe 4.6.1 be installed on win10 1607 TLSB,

champnic · 2021-10-29T17:01:47Z

This is fixed in the newest SDK package 1.0.1056-prerelease. Thanks!

superpapa · 2021-12-29T09:21:54Z

@champnic
Excuse me
When will the new version 1.0.1056 ,not prerelease be released on nuget?

champnic · 2022-01-05T23:34:15Z

@superpapa This should be available in 1.0.1072.* which is coming out later this week or early next. Thanks!

bunki-tou added the bug Something isn't working label Feb 17, 2021

champnic self-assigned this Feb 18, 2021

champnic added the tracked We are tracking this work internally. label Feb 19, 2021

champnic mentioned this issue Mar 18, 2021

WebView2 Does not work with .NET462 and Windows 10 (Version: 1507 | Build 10240) #1064

Closed

bgxie mentioned this issue May 8, 2021

Don't make Installer required #341

Closed

champnic mentioned this issue Jul 27, 2021

System.TypeLoadException: Could not load type 'System.Runtime.InteropServices.RuntimeInformation' #1571

Closed

champnic mentioned this issue Aug 20, 2021

webview2 need .net 4.7.1 to run and unable on .net 4.5 #1667

Closed

champnic mentioned this issue Oct 8, 2021

power bi #1785

Closed

novac42 closed this as completed Jul 14, 2023

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

failed with exception ='System.TypeLoadException on .NETFramework 4.6.2 #946

failed with exception ='System.TypeLoadException on .NETFramework 4.6.2 #946

bunki-tou commented Feb 17, 2021 •

edited by champnic

Loading

champnic commented Feb 18, 2021

bunki-tou commented Feb 18, 2021 •

edited

Loading

juergenil commented Feb 18, 2021

champnic commented Feb 19, 2021

bunki-tou commented Feb 20, 2021

paolodel commented May 4, 2021

champnic commented May 4, 2021

dianaqu commented May 13, 2021

juergenil commented May 13, 2021

bunki-tou commented May 13, 2021

Tennyleaz commented May 24, 2021

dianaqu commented Jun 8, 2021

bunki-tou commented Jun 15, 2021

yudaming commented Jul 9, 2021

dianaqu commented Jul 16, 2021

gpsaliola commented Jul 20, 2021

dianaqu commented Jul 20, 2021

gpsaliola commented Jul 20, 2021 •

edited

Loading

bunki-tou commented Jul 21, 2021 •

edited

Loading

paolodel commented Jul 21, 2021

gpsaliola commented Jul 21, 2021

gpsaliola commented Jul 23, 2021

champnic commented Jul 23, 2021 •

edited

Loading

gpsaliola commented Jul 24, 2021

champnic commented Jul 26, 2021 •

edited

Loading

gpsaliola commented Jul 27, 2021

drearyrainDeng commented Aug 30, 2021

champnic commented Oct 29, 2021

superpapa commented Dec 29, 2021

champnic commented Jan 5, 2022

failed with exception ='System.TypeLoadException on .NETFramework 4.6.2 #946

failed with exception ='System.TypeLoadException on .NETFramework 4.6.2 #946

Comments

bunki-tou commented Feb 17, 2021 • edited by champnic Loading

champnic commented Feb 18, 2021

bunki-tou commented Feb 18, 2021 • edited Loading

juergenil commented Feb 18, 2021

champnic commented Feb 19, 2021

bunki-tou commented Feb 20, 2021

paolodel commented May 4, 2021

champnic commented May 4, 2021

dianaqu commented May 13, 2021

juergenil commented May 13, 2021

bunki-tou commented May 13, 2021

Tennyleaz commented May 24, 2021

dianaqu commented Jun 8, 2021

bunki-tou commented Jun 15, 2021

yudaming commented Jul 9, 2021

dianaqu commented Jul 16, 2021

gpsaliola commented Jul 20, 2021

dianaqu commented Jul 20, 2021

gpsaliola commented Jul 20, 2021 • edited Loading

bunki-tou commented Jul 21, 2021 • edited Loading

paolodel commented Jul 21, 2021

gpsaliola commented Jul 21, 2021

gpsaliola commented Jul 23, 2021

champnic commented Jul 23, 2021 • edited Loading

gpsaliola commented Jul 24, 2021

champnic commented Jul 26, 2021 • edited Loading

gpsaliola commented Jul 27, 2021

drearyrainDeng commented Aug 30, 2021

champnic commented Oct 29, 2021

superpapa commented Dec 29, 2021

champnic commented Jan 5, 2022

bunki-tou commented Feb 17, 2021 •

edited by champnic

Loading

bunki-tou commented Feb 18, 2021 •

edited

Loading

gpsaliola commented Jul 20, 2021 •

edited

Loading

bunki-tou commented Jul 21, 2021 •

edited

Loading

champnic commented Jul 23, 2021 •

edited

Loading

champnic commented Jul 26, 2021 •

edited

Loading