Hi,
This behavior may occur if the connection to the network location is lost during the time that your Word is opening the file. To work around this issue, add the
EnableShellDataCaching value to the Microsoft Windows registry.
HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\Open Find
DWORD: EnableShellDataCaching
Value: 1
If above doesn't make any difference, please have a look at the following KB article and check if the scenarios apply:
http://support.microsoft.com/kb/313937/en-us
Please let me know the result.
Regards,
Steve Fan
TechNet Community Support
It's recommended to download and install
Configuration Analyzer Tool (OffCAT), which is developed by Microsoft Support teams. Once the tool is installed, you can run it at any time to scan for hundreds of known issues in Office
programs.