The file opens! And you are able to make changes and save the changes! I've had users lose important files because they thought they were still working on the files in their ~/Documents folder because they ONLY opened them via the Open Recents menu and they almost never empty the Trash. Relaunch Excel (or Word) and click on the File Menu>OpenRecent>The file you created a minute ago and is now sitting in the trash. Move the file to the trash (but don't empty it yet). Open Excel (or Word), create a file with some data in it, Save to the desktop. I've discovered a dangerous bug in Office 2016 that has existed for at least several versions. Hopefully this information will find its way to someone who can do something with it.) it just says 'reconnecting' and never connects. (I tried posting this in the Macadmins microsoft-office Slack channel, but it tells me I'm offline and refuses to let me change it to 'active'.
