A shared folder that is available offline goes offline when you open a file that is in the shared folder in an Office application or in WordPad on a Windows Vista-based computer
Consider the following scenario:
- You have a shared folder that is available offline.
- On a Windows Vista-based computer, in an Office application or in WordPad, you use the Open File dialog box to open an offline file that is in the shared folder.
In this scenario, the shared folder goes offline. After the shared folder goes offline, you cannot make the shared folder go online from Windows Explorer.
For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB954381.