Based on Troubleshooting Alfresco Office Services | Alfresco Documentation and my own testing, Alfresco Office Services + Edit Online doesn't work for 64 bit versions of IE, because it's powered by an office browser plugin that isn't currently produced by Microsoft for 64 bit. This is starting to be an issue for us, as our IT team are rolling out more and more 64 bit versions of windows programs.
Whilst having a play with the latest SharePoint Online, I noticed that that is able to launch Office for online editing with both 32 and 64 bit versions of IE + Office. Instead of using the plugin though, it seems to be using URLs of the form ms-word:ofv|u|https://..... .
Has anyone tried getting Alfresco to generate links like
and got edit online working with 64 bit that way? Does it work? Any gotchas / un-implemented bits of SharePoint emulation on the Alfresco side that break things?