If you cannot see certain fields in the Document Panel in your Microsoft Office applications; for example, version history, check out and check in history, or you cannot see a directory listing for a file, it might be that your ROOT and _vti_bin files have not been deployed properly, or you have not applied the Alfresco Office Services AMP file, if you have installed Alfresco manually.
To check whether this is the case, try to open the ROOT and _vti_bin files from a browser. In these examples, replace server:port with your server and port details.
If you type:http://server:port/, you will see a message Welcome to Alfresco!.
If you type: http://server:port/_vti_inf.html, you will see a blank page. Select Show page source in the browser to see _vti_bin ScriptUrl information.
If you type: http://server:port/_vti_bin/, you will see a message Welcome to Alfresco! This is the /_vti_bin application. This application does not provide a web interface in the browser..
If these files and messages are not available from the browser, then AOS has not been deployed properly.
See Install Alfresco WARs for information on where the deployed ROOT and _vti_bin WAR files need to be located. If _vti_bin.war does not exist, you'll need to reinstall the Alfresco Office Services AMP.