本文出自Simmy的个人blog：西米在线 http://simmyonline.com/archives/342.html
症状：outlook中打开某excel附件出现错误提示： Can't create file: filename. Right-click the folder you want to create the file in, and then click Properties on the shortcut menu to check your permissions for the folder. 无法打开附件。并非所有excel附件都如此。
原因：outlook临时文件夹权限变更或丢失。
解决方法：
1. Click Start > Run and type regedit.
2. Click Edit > Find and type OutlookSecureTempFolder.
3. When regedit has found the entry, it will tell you where your Outlook temporary files are stored. It will look similar to:C:\Documents and Settings\username\Local Settings\Temporary Internet Files\OLKrandomnumber
4. Open My Computer and navigate to this location on your hard drive.
5. Delete all of the files in this folder.
6. Restart Microsoft Outlook and you should be able to open your p_w_upload.
