Home/ Questions/Q 336979
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-12T10:17:35+00:00

I am trying to copy a file from sharepoint to a unc path. I

  • 0

I am trying to copy a file from sharepoint to a unc path. I am using the following code:

 var id = new WindowsIdentity("administrator@mysite.com");
 var p = new WindowsPrincipal(id);
 var wic = id.Impersonate();
 File.Move(oldName, newName);
 wic.Undo();

oldname is C:\test.txt
newName is \\server\folder\test.txt

I am getting the error

A specified logon session does not exist. It may already have been terminated.

How do I go about removing this error OR copy a file from A to B(UNC path) using sharepoint.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    You are not actually getting a logon token to impersonate. You need to call the LogonUser API to get a valid logon token, which you can use to impersonate that user.

    See this blog entry for example code in c# on impersonating a windows user. You can also see this KB article that also contains c# code (and a duplicatetoken call for issues with .net 1.0)

    • 0