sunny,

 

Please check this article:

Writing to a UNC path with the uploading tools

 

If you can't get this work, please check your web.config file and make sure you use impersonation in your web config.

 

Step 1: Create a domain account which has the write permission to your UNC share

        Username: yourdomain/admin

        password="admin”

To access resources on a UNC, your application must run under a domain enabled primary secuirty token, the easiest way to do this is to use impersonation in your web config:

 

<identity

impersonate="true"

userName="yourdomain/admin"

password="admin”

/>