现象：
A problem occurred while connecting to the server. If the problem continues, contact your administrator.
解决办法：
方法一：
In Server Manager go to Roles->Web Server IIS section->Remove Role Services->Uncheck WebDAV Publishing if it is checked. This will require a reboot of the Server.
方法二：
1. Click start->run and input “regedit”, click ok.
2. Deleted the following key from beneath the registry key of:
HKEY_CLASSES_ROOTSoftwareMicrosoftMasterAggregatorForIPPOleDbHandlers
{E1D2BF40-A96B-11d1-9C6B-0000F875AC61} System
3. Reboot your computer and try again.
参考：
http://support.microsoft.com/kb/2018958
http://social.technet.microsoft.com/Forums/office/en-US/354cc99b-57c7-4293-8e79-b914d59afac2/cannot-edit-documents-from-sharepoint-portal-in-word-2010?forum=officeitproprevious