I'd been running 2014.2.1 for several months with no problem. A recent Windows 10 update seems to be the 'cause' of the current problem. I can start up the GW client, but as soon as I try to do anything I get an error "The operating system is not properly configured to run this application". The only thing that corrects the problem is to uninstall Office (Office 365 / 2016). As soon as I reinstall Office, GW does not work. There is apparently a conflict with Outlook (which I cannot eliminate separately in Office 365). Any thoughts on resolving this? I believe I can go back a level on the GW client, but who wants to go backwards? thanks.