Microsoft 365 apps can now update overnight, even if left open

Microsoft Office
(Image credit: Windows Central)

What you need to know

  • Microsoft 365 apps can now perform an update while a machine is in idle or locked mode, even if the applications are left running.
  • The capability is known as "update under lock," and it uses Microsoft's Click-To-Run technology.
  • Office apps will find a safe time to update and implement the changes in a process that takes roughly four seconds.

"A common scenario is for users to leave apps open on their device for extended periods of time. For example, if a user is working on a Word document at the end of the day, they may leave the document open and lock the device intending to continue working on it the next day. When users leave their documents open in this manner, it prevents Office from applying updates. With this feature, the user will come back to a machine in its previous state, but they will be running the latest bits." 

Update under lock will not shut down an app when it's unsafe to do so, such as when a macro is running or the document has unsaved changes. 

The following Windows devices will be affected by the change:

Windows devices only for

  • Microsoft 365 subscriptions, Visio, Project, but not Microsoft Teams, which has its own update process
  • Retail consumer/perpetual Office 2016, 2019, and 2021

All devices, regardless of update endpoint, that are receiving updates from:

  • Current Channel: Version 2109 or later
  • Monthly Enterprise Channel: Version 2112 or later
  • Semi-Annual Enterprise Channel (Preview): Version 2202 or later  
  • Semi-Annual Enterprise Channel: Version 2208 or later (coming Jan 2023)
Sean Endicott
News Writer and apps editor

Sean Endicott is a news writer and apps editor for Windows Central with 11+ years of experience. A Nottingham Trent journalism graduate, Sean has covered the industry’s arc from the Lumia era to the launch of Windows 11 and generative AI. Having started at Thrifter, he uses his expertise in price tracking to help readers find genuine hardware value.

Beyond tech news, Sean is a UK sports media pioneer. In 2017, he became one of the first to stream via smartphone and is an expert in AP Capture systems. A tech-forward coach, he was named 2024 BAFA Youth Coach of the Year. He is focused on using technology—from AI to Clipchamp—to gain a practical edge.