3CXPhone For Windows 15 Will Not Start on Windows 7

[Mwamba]

I am installing 3CX on a 64 bit windows 7 computer. The client installs okay but it does not launch. Both Visual C++ 2010 and 2015 have been successfully installed. I have checked the 3CX Phone log and I can see the following error:
System.IO.FileNotFoundException: Could not load file or assembly 'VCEWindows8Agent.dll' or one of its dependencies

I have tried uninstalling 3CX, rebooting the laptop and installing 3CX again but the issue still persists. Does anyone have a solution for this issue?

 

[Marios Neophytou]

Hello @Mwamba,

Try and uninstall the application again and this time remove PhoneApp folder from C:\ProgramData\3CXPhone for Windows and install again.

 

[Mwamba]

Hello @Mwamba,

Try and uninstall the application again and this time remove PhoneApp folder from C:\ProgramData\3CXPhone for Windows and install again.

I did as you said. I uninstalled the client, restarted the computer and then installed it again. The error is still the same.

[29.03.2018 08:41:28.238][1] Starting application
[29.03.2018 08:41:28.240][1] Initializing configuration
[29.03.2018 08:41:28.279][1] Loading configuration file C:\Users\admin\AppData\Roaming\3CXPhone for Windows\3CXPhone.xml
[29.03.2018 08:41:28.279][1] Configuration file C:\Users\admin\AppData\Roaming\3CXPhone for Windows\3CXPhone.xml does'not exist
[29.03.2018 08:41:28.279][1] Trying to load backup configuration
[29.03.2018 08:41:28.279][1] Loading configuration file C:\Users\admin\AppData\Roaming\3CXPhone for Windows\3CXPhone.xml.back
[29.03.2018 08:41:28.279][1] Configuration file C:\Users\admin\AppData\Roaming\3CXPhone for Windows\3CXPhone.xml.back does'not exist
[29.03.2018 08:41:28.279][1] Using empty configuration
[29.03.2018 08:41:28.285][1] Initializing configuration with existing xml configuration
[29.03.2018 08:41:28.316][1] Initializing supported languages dictionary
[29.03.2018 08:41:28.361][1] Merging string resource dictionary
[29.03.2018 08:41:28.445][4] Opening named pipe for IPC
[29.03.2018 08:41:28.530][1] Pro only added CallTriggerCmdPlugin, Version=15.5.0.0, Culture=neutral, PublicKeyToken=null
[29.03.2018 08:41:28.531][1] Pro only added CallTriggerCmdPlugin, Version=15.5.0.0, Culture=neutral, PublicKeyToken=null
[29.03.2018 08:41:28.532][1] Pro only added CallTriggerCmdPlugin, Version=15.5.0.0, Culture=neutral, PublicKeyToken=null
[29.03.2018 08:41:28.533][1] Pro only added CallTriggerCmdPlugin, Version=15.5.0.0, Culture=neutral, PublicKeyToken=null
[29.03.2018 08:41:28.554][1] Pro only added DotNetScriptPlugin, Version=15.5.0.0, Culture=neutral, PublicKeyToken=bac47dd19dc4098a
[29.03.2018 08:41:28.554][1] Pro only added DotNetScriptPlugin, Version=15.5.0.0, Culture=neutral, PublicKeyToken=bac47dd19dc4098a
[29.03.2018 08:41:28.557][1] Initializing main window
[29.03.2018 08:41:28.578][1] Error occurred during application startup
[29.03.2018 08:41:28.590][1] System.Windows.Markup.XamlParseException: Provide value on 'System.Windows.Markup.StaticExtension' threw an exception. ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.TypeInitializationException: The type initializer for '_3CXWin8Phone.ViewModel.DialPadOperationsVM' threw an exception. ---> System.TypeInitializationException: The type initializer for '_3CXWin8Phone.Biz' threw an exception. ---> System.IO.FileNotFoundException: Could not load file or assembly 'VCEWindows8Agent.dll' or one of its dependencies. The specified module could not be found.
   at _3CXWin8Phone.Biz..ctor(IResourceLoader resourceLoader)
   at _3CXWin8Phone.Biz..cctor()
   --- End of inner exception stack trace ---
   at _3CXWin8Phone.Biz.get_Instance()
   at _3CXWin8Phone.ViewModel.DialPadOperationsVM.InitializeMyPhoneVM()
   at _3CXWin8Phone.ViewModel.DialPadOperationsVM..ctor(IResourceLoader resourceLoader)
   at _3CXWin8Phone.ViewModel.DialPadOperationsVM..cctor()
   --- End of inner exception stack trace ---
   --- End of inner exception stack trace ---
   at System.RuntimeFieldHandle.GetValue(RtFieldInfo field, Object instance, RuntimeType fieldType, RuntimeType declaringType, Boolean& domainInitialized)
   at System.Reflection.RtFieldInfo.UnsafeGetValue(Object obj)
   at System.Reflection.RtFieldInfo.InternalGetValue(Object obj, StackCrawlMark& stackMark)
   at System.Reflection.RtFieldInfo.GetValue(Object obj)
   at System.Windows.Markup.StaticExtension.GetFieldOrPropertyValue(Type type, String name, Object& value)
   at System.Windows.Markup.StaticExtension.ProvideValue(IServiceProvider serviceProvider)
   at MS.Internal.Xaml.Runtime.ClrObjectRuntime.CallProvideValue(MarkupExtension me, IServiceProvider serviceProvider)
   --- End of inner exception stack trace ---
   at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
   at System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlReader, Boolean skipJournaledProperties, Object rootObject, XamlAccessLevel accessLevel, Uri baseUri)
   at System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream)
   at System.Windows.Application.LoadComponent(Object component, Uri resourceLocator)
   at _3CXWin8Phone.MainWindow.InitializeComponent()
   at _3CXWin8Phone.MainWindow..ctor()
   at _3CXWin8Phone.App.Application_Startup(Object sender, StartupEventArgs e)

I checked the C:\ProgramData\3CXPhone for Windows\PhoneApp folder and the file VCEWindows8Agent.dll is there.

 

[Marios Neophytou]

Hello,

Check if the windows 7 machine has the latest updates and Service Pack 1
Check if vs2015 C++ X86 Redistributable is installed on the machine

 

[Mwamba]

I will check on the windows updates and see whether that is the issue. The machine is running SP1.

 

[LeonidasG_3CX]

Let us know if this solves your issue.

 

[Mwamba]

I will, the client is on Easter Break. So I will bring a response on Tuesday.

 

[LeonidasG_3CX]

Managed to reproduce this error just by uninstalling Visual Studio 2015 / 2010 dependencies.
Looks like your client uninstalled this but also expects the 3CX Client to work. There's your problem.

 

[Mwamba]

Hi @LeonidasG
Sorry for the delayed response. I checked the computer and it has Visual C++ 2010 and 2015 installed. I added the 64 bit versions of the same and it is still not working.
The PC is running Windows 7 SP1 as shown:



Both Visual C++ 2010 and 2015 are installed:

 

[Marios Neophytou]

Hello @Mwamba ,

Does VCEWindows8Agent.dll exist on the PhoneApp folder under ProgramData after you uninstalled/installed the app?

 

[Mwamba]

Hi,

Yes the VCEWindows8Agent.dll file is always there even after I deleted the folder and did the reinstallation