C# file.copy from network path fails could not find file

this is so simple its driving me crazy. i h开发者_C百科ave another C# project where i had issues, so i then wrote a small windows form with a button that just copies a file.

File.Copy(@"\\host2\c$\test.txt", @"c:\test.txt");

i even tried

File.Copy(@"\\host2\c$\test.txt", @"\\localhost\test.txt");

each time it fails with exception could not find file "\\host2\c$\test.txt"

both hosts are win2008 in the same windows domain, i am domain admin with local admin rights on both hosts. i can do it from command line fine, and i can start/run to host name in windows find and copy also.

i am at a loss here? i googled around and lots of people had issues when one host was in domain in one in a workgroup, but that is not the case with my issue.

any help or ideas?

---

Can you manually get to that link through Windows Explorer? Any chance the default Windows share (C$) is disabled?

---

No reason in the world why that code won't work.

I know you've said you can do it in a command line, but I suspect the problem is still something to do with either permissions or shares. Try starting your app as administrator, see if that helps

---

Try disabling UAC remote restrictions on remote host http://support.microsoft.com/kb/951016/