Interop.Word Documents.Open is null
问题描述
程序在Windows Server 2012 R2调用Word组件正常，但是换到Windows Server 2008 R2之后，程序异常。
代码
Microsoft.Office.Interop.Word.Application word = new Microsoft.Office.Interop.Word.Application();
Document doc = word.Documents.Open(filename);
//doc is null
解决
step1
创建文件夹，C:WindowsSystem32configsystemprofileDesktop
step2
Open DCOM Config Settings:
Start -> dcomcnfg.exe
Computer
Local Computer
Config DCOM
Search for Microsoft Word 97-2003 Documents -> Properties
Tab Identity, change from Launching User to Interactive User
参考地址
https://stackoverflow.com/questions/10837437/interop-word-documents-open-is-null