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I have used vs2010 and silverlight 5 to access scanner in web browser. When i host the application on iis7, i can able to access scanner in Mozilla but does not in internet explorer. why the IE browser does not support to access scanner in web browser?

I made changes in,
Server side
• Sign the xap using certificate.
Client side
• Install the cert into “trusted publishers”
• Change the reg key “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Silverlight \AllowElevatedTrustAppsInBrowser” to 1

My code is,
    using (dynamic CommonDialog = AutomationFactory.CreateObject("WIA.CommonDialog"))
        dynamic imageFile = CommonDialog.ShowAcquireImage();
        if (imageFile != null)
            if (!Directory.Exists("D:\\ScanImage"))
            string filePath = string.Format("D:\\ScanImage\\{0}.jpg", Guid.NewGuid());
catch (System.Runtime.InteropServices.COMException ex)
    if (ex.ErrorCode == -2145320939)
        MessageBox.Show("Could not find an attached scanner.", "Scanner Error", MessageBoxButton.OK);
        MessageBox.Show(ex.Message, "Scanner Error", MessageBoxButton.OK);

Thanks in advance
Updated 18-Apr-13 0:29am
Neha G. Nagpurkar 20-Jun-13 7:35am    
Can I get demo application for this? I have been searching for last 2 weeks. Thanks in advance.

Maybe the examples here can help you out:[^]

Good luck!
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Sugu.s 18-Apr-13 7:05am    
Hi Nijboer,

I was tried all these parameters in ShowAcquireImage Method. But not working.
E.F. Nijboer 18-Apr-13 7:16am    
Maybe this info helps, there seems to be another reg key:
Sugu.s 18-Apr-13 7:40am    
If i open browser with Run as Administrator (with Administrator permissions), able to access scanner. do you have any idea without admin permission to access.
E.F. Nijboer 18-Apr-13 8:21am    
Seems you need to give non-admin users the correct permission. There is some info on that on the above link, like info on Group Policy Settings. I don't know exactly whats wrong. It is also strange that Firefox does work, or are you always running that as administrator?
Also have a look here:
Sugu.s 22-Apr-13 7:15am    
I was tried all group policy settings and all above given link details, nothing to work. Any idea tell me ASAP

To work in IE, Just change ElevatedPermissions="Required" in InBrowserSettings.xml
    <SecuritySettings ElevatedPermissions="Required" />
    <!--<SecuritySettings ElevatedPermissions="NotRequired" /> This is default-->
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Sugu.s 17-Dec-13 0:56am    
Hi, already the ElevatedPermissions set as Required.

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