Windows 10 2004: Expect under 20 minutes' downtime for business update, says Microsoft

Microsoft promises faster Windows 10 updates and more control over reserved storage on enterprise PCs.

What to expect from Windows 10 version 2004

Microsoft reckons its multi-year efforts to speed up the feature update process will enable an update experience for Windows 10 version 2004 that's under 20 minutes. 

Microsoft went back to the drawing board to re-engineer its Windows 10 update processes after the disastrous rollout of Windows 1809 in October 2018, which came with a bug that deleted users files. 

As ZDNet's Windows-watcher Ed Bott recently noted, Microsoft failed to deliver its promise that Windows 10's twice-yearly updates would be less hassle for users than its previous three-year major upgrade cycle.  

Bott's experience of downloading a preview release of Windows 10 version 2004 involved installing a 3GB package, with most of the installation process happening in the background. On systems with SSDs as main storage, the average time to install Windows 10 was just seven minutes. With an older hard drive, the installation took 17 minutes. 

Microsoft in a blogpost boasts of the massive speed improvements since Windows 10 version 1703. 

"With Windows 10, version 2004, offline time continues to decrease, from a median time of over 80 minutes in version 1703, to less than 20 minutes in version 2004, including only a single reboot for many users," said Joe Lurie, a senior product marketing manager at Microsoft.

Microsoft has also planned improvements for the reserved storage feature it introduced in 2019 to smooth the update process for devices with a small amount of storage space. The tool is meant to reduce the chances of Windows feature updates running into trouble if there's insufficient disk space 

The Windows 10 2004 release includes new tools that allow admins to disable reserved storage on demand with new command-line options for Deployment Image Servicing and Management, which first appeared in version 1903 but which will now gain new commands for improved control. 

"With this release, we've added a new set of Deployment Image Servicing and Management (DISM) commands and APIs so you can enable and disable reserved storage on demand, including on Windows 10 devices that were not shipped with Windows 10, version 1903 and higher," said Lurie

Both features can be trialed by admins if they enroll devices in Microsoft's Windows Insider Program for Business. 

The 2004 update also includes more controls for Dynamic Update to improve controls and diagnostics for Windows Setup. Admins can search, download and install Dynamic Updates while excluding the latest quality update and driver updates. 

Admins also gain a new way to recover the Windows 10 OS from the cloud and reset a PC. Microsoft has been working on the cloud reset option for the past year

"With this release we've added the option to recover Windows 10 by downloading the necessary files from the cloud, resulting in increased reliability and, depending on your internet speed, a faster recovery."   

There are several security enhancements in the pipeline, too, including Windows Defender Application Guard for Chromium-based Edge, which relies on containers to protect the operating systems from malicious websites. 

Application Guard for Office is automatically enabled when Application Guard policies are enabled in Windows 10. Microsoft last month expanded the private preview of Application Guard for Office 365 ProPlus.

Finally, it's now possible to enable Windows Hello PIN and biometric login on devices started in Safe Mode. 

Admins can also enable passwordless sign-in for Microsoft accounts by going to Settings > Accounts > Sign-in options, and selecting 'On' under Require Windows Hello sign-in for Microsoft Accounts.