Excel 2007 automation on top of a Windows Server 2008 x64

今天在一个客户这边出来一个windows service的问题。这个service需要启动excel程序，并且对一些excel文件做一些操作。

环境是：windows server 2008 x64+Excel 2007

总是报告错误：(类似下面这样）

Service cannot be started. System.Runtime.InteropServices.COMException (0x800A03EC): Microsoft Office Excel cannot access the file 'c:\temp\test.xls'. There are several possible reasons:

• The file name or path does not exist.
• The file is being used by another program.
• The workbook you are trying to save has the same name as a currently open workbook.

代码怎么看都是可以的，反复调试了service,问题最后解决了，大致有如下几点

 

第一步：在服务器添加有关的一个目录

这个方案参考了http://social.msdn.microsoft.com/Forums/en-US/innovateonoffice/thread/b81a3c4e-62db-488b-af06-44421818ef91?prof=required

This solution is ...

・Windows 2008 Server x64
  Please make this folder.

  C:\Windows\SysWOW64\config\systemprofile\Desktop

・Windows 2008 Server x86

  Please make this folder.

  C:\Windows\System32\config\systemprofile\Desktop

  ...instead of dcomcnfg.exe.

This operation took away office automation problems in my system.

A Desktop folder seems to be necessary in the systemprofile folder to open file by Excel.

It disappears from Windows2008, Windows2003 had the folder,
and I think it cause this error.

I think it is safer than "registry hack".

If you try this solution, please let me know results.

 

第二步：设置服务与桌面交互

 

第三步：关闭服务器的UAC（这一步至关重要，调试了一个下午，就是因为这个问题卡住）