Win10 2004 update stalls at 90% during final(?) phase

James Walsh 21 Reputation points

From windows start ...settings...update I elected to install the latest win10 update, version 2004.

Everything was going smoothly, but slowly over a few hours. However, after maybe the final reboot, I have the screen showing "working on updates" and a percentage. The percentage gradually increased until it reached 90%. It stalled there, for more than 12 hours. The rotating "busy" icon keeps rotating, but percentage is not changing.

Windows 10 Setup
Windows 10 Setup
Windows 10: A Microsoft operating system that runs on personal computers and tablets.Setup: The procedures involved in preparing a software program or application to operate within a computer or mobile device.
1,784 questions
{count} votes

Accepted answer
  1. Dave Patrick 352.4K Reputation points MVP

    Might also try from a clean boot.

    --please don't forget to Accept as answer if the reply is helpful--

    Regards, Dave Patrick ....
    Microsoft Certified Professional
    Microsoft MVP [Windows Server] Datacenter Management

    Disclaimer: This posting is provided "AS IS" with no warranties or guarantees, and confers no rights.

    0 comments No comments

3 additional answers

Sort by: Most helpful
  1. Leon Laude 85,221 Reputation points


    Also make sure you have sufficient disk space available, you can run the Windows 10 Update Assistant to check the prerequisites.

    Best regards,

    0 comments No comments

  2. Don Cuthbert 406 Reputation points

    Sometimes disconnecting or disabling all networking at this point will push the Windows upgrade through to completion. If Ethernet, disconnect the network cable. For wireless, you might have to temporarily power off the Wi-Fi router, if there is no way to disable it on the upgrading device.

    0 comments No comments

  3. Jenny Feng 701 Reputation points


    You might check the following maybe block the upgrade:

    • You need to ensure you have 10 to 16 GBs of free space.
    • If there is a SD card installed, uninstall it or disable it.
    • Disconnect any USB drives.

    Another way users have been able to successfully install the update is by using the Update Assistant. Go to the following page then click 'Update Now':

    Hope above information can help you.

    0 comments No comments