Our customer switched server-enviroment to Windows 2016. Code was running successful before change of OS and now we get following exception:

Exception: System.Exception
Message: Failed to start image manager
Stacktrace:
at EO.Internal.js.p.b()
at EO.Internal.js.p.e()
at EO.Internal.js.o()
at EO.Internal.js.a(Boolean& A_0, bam[] A_1, String A_2, String A_3)
at EO.Internal.js.a(bam[] A_0, String A_1, String A_2)
at EO.Internal.awa.b()
at EO.Internal.awa.a(WindowsIdentity A_0)
at EO.WebEngine.Engine.Start(WindowsIdentity user)
at EO.Internal.awa.c()
at EO.Internal.cv..ctor(WebView A_0)
at EO.WebBrowser.WebView.u()
at EO.WebBrowser.WebView.a(IntPtr A_0, Boolean A_1)
at EO.WinForm.WebViewHost.a(Object A_0)

There is no antivirus active and we are not working with eowp.exe. Error occurs before we can set URL.

WebView is initialized this way:

//
// WebView
//
this.WebView.AcceptLanguage = "de-CH";
this.WebView.InputMsgFilter = null;
this.WebView.ObjectForScripting = null;
this.WebView.CertificateError += new EO.WebBrowser.CertificateErrorHandler(this.WebView_CertificateError);
this.WebView.LoadFailed += new EO.WebBrowser.LoadFailedEventHandler(this.WebView_LoadFailed);

Any help is very appreciated.

Yes, i saw this workaround and it's working. But...

We deploy our application through MS-Clickonce and I don't know how to correct add this eowp.exe to the package. If I try to add a reference to the exe in VS-Project so i get also an errormessage.

The described solution seems to me only a workaround and not the real solution to the problem. Is there another way?

Additional info: with previous Server Version it was perfect working. Troubles began with Windows 2016...

Thanks for help.

We are getting the following error running the browser on Windows Server 2012:


The antivirus has been configured to ignore the application. We are working with eowp.exe and have used InitWorkerProcessExecutable in version 19.2.91. The error is occurring when we call WebView.Create(pictureBox1.Handle)

I just wanted to add a note here. We came across this problem yesterday (same error message and stack trace). In our case it turned out to be caused an antivirus / cybersecurity software called SpearTip. My guess is they are attaching a debugger to all processes in order to scan for threats. It was causing EO child processes to crash. Enabling the worker process had no impact, it would just crash those too. Disabling it resolved the problem.

Funny enough their local IT claimed they didn't have an antivirus. I didn't ask questions. You can't see the software installed normally, just a bunch of "ShadowSpear" services running. Maybe this IT employee wasn't let in on the secret.

We are still getting this error in the browser running on Windows Server 2012:


The antivirus has been configured to ignore the application. We are working with eowp.exe and have used InitWorkerProcessExecutable in version 21.0.18. The error is occurring when we call WebView.Create(pictureBox1.Handle)

We have many copies of our application running at the same time and this is only happening on some of them.

It is running Windows Server 2012 Standard. There is nothing in the Event Viewer because my BrowserApplication is catching all exceptions. That was the stack trace I sent in my previous message. Here's the output from running "eowp.exe /debug.listModules":
c:\Webs\BrowserApplication\eowp.exe (0x00400000)
C:\Windows\SYSTEM32\ntdll.dll (0x76FB0000)
C:\Windows\SYSTEM32\KERNEL32.DLL (0x751D0000)
C:\Windows\SYSTEM32\KERNELBASE.dll (0x76B70000)
C:\Program Files\Bitdefender\Endpoint Security\atcuf\265001475536055923\atcuf32.dll (0x74370000)
C:\Windows\SYSTEM32\PSAPI.DLL (0x76B10000)
C:\Windows\SYSTEM32\USER32.dll (0x75040000)
C:\Windows\SYSTEM32\GDI32.dll (0x74A00000)
C:\Windows\system32\IMM32.DLL (0x76D20000)
C:\Windows\SYSTEM32\MSCTF.dll (0x74F60000)
C:\Windows\SYSTEM32\msvcrt.dll (0x74B00000)

It's been whitelisted in BitDefender and it's no longer in the DLL list. However, it's still occurring. Do you have any other recommendations? We're also still getting lots of these errors from other instances of the application: