Can't open PDF with Adobe Acrobat Reader DC with a webapplication

[alexanderh24709753]

Hi,

i am trying to open a pdf file from my webapplication (asp.net) and i get following message after a while.

The pdf doesn't open. After that i can't open Adobe Acrobat Reader DC directly. Or i can' open any pdf directly with the Reader.

And in the Taskmanager you will see it opens many processes of Adobe

is there an other (better) way as the below code to open a pdf file?

public class Download : IHttpHandler, System.Web.SessionState.IRequiresSessionState
   {

   public void ProcessRequest(HttpContext context)
   {
   try
   {
   string filename = "DEV-H211.pdf";
   string documentDirectory = @"D:\";

  if (File.Exists(string.Format("{0}\\{1}", documentDirectory, filename)))
  {
  context.Response.ContentType = "application/pdf";
  context.Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", filename));

  context.Response.TransmitFile(string.Format("{0}\\{1}", documentDirectory, filename));
  context.Response.Flush();
  }
  }
  catch(Exception ex)
  {
  Console.WriteLine(ex.Message);
  } 
  }

  public bool IsReusable
  {
  get
  {
  return false;
  }
  }
  }

[AadeshSingh]

Hi alexanderh24709753

Try the solutions given below:-

Solution 1) (This error occurs when you have more than 1 process of Acrobat running)

• 1) Go to the task manager by pressing Ctrl+Alt+Del
• 2) Go to the processes in Task Manager
• 3) End all processes related to Acrobat
• 4) Launch Acrobat again.

Solution 2) Open Acrobat navigate to Help menu & Repair the installation.

Solution 3) Check the file association on your system.

Solution 4) Navigating to HKEY_CLASSES_ROOT\acrobat\shell\open\ddeexec\application and changing the Key "AcroviewA10"  to  "AcroviewR10.

Regards,

Aadesh

[alexanderh24709753]

I found the problem. If i start the webapplication with Visual Studio as an Administrator and the Browser opens with the application, it has a problem. If the Browser is open and then i start the application, there is no problem.

It must be something with Visual Studio and starting as Administrator