打开EMC或事件日志，都报错：
Problem signature:
  Problem Event Name:    APPCRASH
  Application Name:    mmc.exe
  Application Version:    6.0.6002.18005
  Application Timestamp:    49e02760
  Fault Module Name:    mscorwks.dll
  Fault Module Version:    2.0.50727.5653
  Fault Module Timestamp:    4d54a59c
  Exception Code:    c0000005
  Exception Offset:    00000000001dfa64
  OS Version:    6.0.6002.2.2.0.274.10
  Locale ID:    1033
 
 
解决方法：（更新完系统补丁后，全部update到最新后，再补上下在的补丁。
http://archive.msdn.microsoft.com/KB979744/Release/ProjectReleases.aspx?ReleaseId=3993