Os navegadores não respondem ao link externo

Question

Quando eu clico em hiperlinks em alguns softs (Adobe Reader, unity3d, FileZilla, shadowocksR, eve launcher, etc), os navegadores não respondem de forma alguma.

Os navegadores (Firefox, Chrome e IE) funcionam normalmente sozinhos. E o que for escolhido como padrão, o problema é mantido.

Alguns softs chamam os navegadores com sucesso: Explorer, Word, QQ (um bate-papo), um aplicativo pequeno que protege os olhos.

Se eu reiniciar o Windows no Modo de segurança com suporte da Web, o problema desapareceu mas volta no modo normal.

Isso significa que as diferenças nas autoridades ou nas APIs desses softwares podem torná-los capazes ou incapazes de abrir URLs em navegadores padrão?

Para a maioria dos softs que falharam, nada aconteceu depois do clique. Mas para o FileZilla e o ShadowsockR, recebi algumas mensagens de erro:

Mensagens de erro do FileZilla:

OlogdoFileZilla2(igualàsegundamensagemdeerro):

20:40:04:FailedtoopenURL"https://offers.filezilla-project.org/redirect.php?c=seed4me&s=u" in default browser. (error -2147221003: 找不到应用程序)
20:40:04: Could not launch the default browser with url 'https://offers.filezilla-project.org/redirect.php?c=seed4me&s=u' !
20:41:41: Failed to open URL "https://filezilla-project.org/" in default browser. (error -2147221003: 找不到应用程序)
20:41:41: Could not launch the default browser with url 'https://filezilla-project.org/' !
20:41:52: Failed to open URL "https://filezilla-project.org/sponsored_updates.php" in default browser. (error -2147221003: 找不到应用程序)
20:41:52: Could not launch the default browser with url 'https://filezilla-project.org/sponsored_updates.php' !

Log de erros do ShadowsocksR:
:

See the end of this message for details on invoking 
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.ComponentModel.Win32Exception (0x80004005): 找不到应用程序
   at System.Diagnostics.Process.StartWithShellExecuteEx(ProcessStartInfo startInfo)
   at System.Diagnostics.Process.Start(ProcessStartInfo startInfo)
   at Shadowsocks.View.MenuViewController.AboutItem_Click(Object sender, EventArgs e)
   at System.Windows.Forms.MenuItem.OnClick(EventArgs e)
   at System.Windows.Forms.MenuItem.MenuItemData.Execute()
   at System.Windows.Forms.Command.Invoke()
   at System.Windows.Forms.NotifyIcon.WndProc(Message& msg)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)


************** Loaded Assemblies **************
mscorlib
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1590.0 built by: NETFXREL2
    CodeBase: file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/mscorlib.dll
----------------------------------------
ShadowsocksR
    Assembly Version: 4.7.0.0
    Win32 Version: 4.7.0.0
    CodeBase: file:///C:/Users/Jules%20Liu/Downloads/ShadowsocksR-4.7.0-win/ShadowsocksR-dotnet4.0.exe
----------------------------------------
System.Windows.Forms
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1590.0 built by: NETFXREL2
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1590.0 built by: NETFXREL2
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Drawing
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1590.0 built by: NETFXREL2
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Configuration
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1590.0 built by: NETFXREL2
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Core
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1590.0 built by: NETFXREL2
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll
----------------------------------------
System.Xml
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1590.0 built by: NETFXREL2
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------

************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.

For example:

<configuration>
    <system.windows.forms jitDebugging="true" />
</configuration>

When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.