My.Computer.Network.UploadFile blocked by Server

[monkey64]

I wrote a vb.net 2008 program to upload a file to a web server. It works fine when executed manually, but has issues when scheduled on our Microsoft Small Business Server 2003.

It works for about a week, then just stops working. On the web server, I get a zero-byte file. I think this indicates that the data transfer is being blocked.

I tried all the usual things, such as permission levels on the server and everything is set to Full Control. I also changed the manifest to level="requireAdministrator". Obviously, this could be a server issue?

Here's the code I am using to upload.

My.Computer.Network.UploadFile("C:\update.php",
"ftp://ftp.myhosting.net/folder/htdocs/update.php", user, pass, True, 500)

Any ideas?

 

[Bluejay07]

Just a thought:
Would it make any difference if the program is physically set to 'Run As Administrator'?

Also, any firewalls preventing server access or could there be timeout issues?

Not sure if any of these apply, but thought I should post them anyway.