My system is Windows 7 Pro 64-bit. I am using Office 2010 Pro Plus. I subscribe to Google Apps and use Outlook 2010 (MAPI) for email. When I launch it, I get the Google Sync window and it appears all is well, but all I see is that sync window. If I leave that window open and "re-launch" Outlook I get a blank window entitled "Inbox", but no email. If I right-click and choose "maximize" I can see the inbox but I cannot open any email. I can see the inbox but I cannot choose any other mailboxes, cannot open a new mail, etc. When I choose these things, I get no response. If I try to re-size or move the full-size window, it disappears. I use dual monitors and Outlook always open on the right-hand monitor, but I cannot move it to the left-hand one. When I try, it disappears. It doesn't appear to close, in that if I look on the task bar, the window is there, but I cannot see it unless I maximize. And as I said, I cannot re-size or move it. When I try, it disappears (appears to be minimized).
This was happening about a month ago and I just restarted everything and it worked OK, but I've restarted three times today and still have the same symptoms.