There are times when emails don’t get downloaded automatically in Outlook.
It does not automatically perform send/ receive operation to download emails from the server.
By default, Click-to-Run installations of Microsoft Office 2016 are configured to automatically update your Office installation when new updates are made publicly available.
If you have Give me updates for other Microsoft products when I update Windows checked in your Windows Update settings, then Windows Update will automatically install your Office 2016 updates when available.
It is pointless and stupid and represents Microsoft carelessness at its worst. It only affects a few people, but those people have no good way to discover how to fix it. I’ve probably run into it 15 or 20 times in the last six months, including some people who have experienced it more than once.
As near as I can tell, it happens to people who have Office 2016, licensed through a business Office 365 subscription. The Office updates are unpredictable, completely untethered from any day of the week, and we are given no warning when they are going to be installed. Nothing will make Outlook get past the “processing” screen.
Automatic Maintenance is when Windows automatically runs maintenance on a daily schedule when you're not using your computer.
When you’ve switched successfully, the Windows Update screen will no longer show the “Find out more” link and should state: You receive updates: For Windows and other products from Microsoft Update.
When you are using an Office 365 installation of Office 2013 or Office 2016, then the updates will not be offered via Windows Update but will be installed automatically.
You can manually check for updates from within any Office application.
By default Windows Update only updates Windows itself.
In order to get updates for Office and other Microsoft products as well, you’ll have to “update” your Windows Update to Microsoft Update.
That’s when I started to run into it and here’s someone who wrote an article about it in July 2016. I have no idea why they think Office updates require that we click “Accept” on a new license agreement screen.