However, Windows 10 update KB4056892 download might be stuck at 0% or at 99% and may show elevated CPU or disk utilization for some unlucky users. This is a known issue and Microsoft is aware of it. Fix Windows 10 update KB4056891 and KB4056892 download stuck 99%. May 22, 2017 - If you stuck at 99% while using Windows 10 Upgrade Assistant to perform. You can download the driver from your PC manufacturer's website.

• Abort Windows Update Service. In the case of Windows 10 Upgrade Stuck at 99% issue is triggered by the conflict with upgrading process, stopping Windows Update Service may be the right solution. This service is running in the background of the system so that it can start the conflict at the end of the upgrade process.
• Installed Windows 7 Ultimate (64-bit) on a fresh PC and after installing service pack 1 started the upgrade to Windows 10. The assistant app downloads and verifies but gets stuck at 99% in the upgrading window phase.

Hi,

Thank you for posting your query in Microsoft Community Forums.

Based on the description, it appears that you are facing issues with downloading .exe files as it stops at 99%. I will be happy to help you with this issue.

1) Is the issue confined with a specific file format or with others as well?

2) Is the issue confined only with .exe files?

3) Have you made any changes on the computer prior to this issue?

Step 1: I would suggest you to follow the steps to boot in Safe Mode with Networking and check if it helps.

Start the computer in safe mode with Networking:

If the issue does not persist, then follow the article to find the cause of the same.

Step 2: I would suggest you to place the computer in clean boot mode and check if the issue persists.
A clean boot helps to verify if any third party application services or startup item is causing this issue.
You may refer the following KB article to set the computer in clean boot:

How to configure Windows XP to start in a 'clean boot' state

Note: After you used the clean boot to resolve your problem, you can follow these steps to configure Windows XP to start normally.

1.Click Start, and then click Run.

2.Type msconfig, and then click OK.
The System Configuration Utility dialog box is displayed.

3.Click the General tab, click Normal Startup - load all device drivers and services, and then clickOK.

Windows 10 Download Stops At 99%

4.When you are prompted, click Restart to restart the computer.

I hope it helps. If you have any issues regarding Windows in future please let us know. We will be happy to help you.

Hello,

As per the description, you are experiencing issue with you are trying to update to Windows 10 from Windows 7 and the download stops at 99% without any failure code on the system.

I certainly understand your concern.

I would suggest you to refer to the suggestions provided by “Andre Da Costa” replied on January 29, 2015 in the following Microsoft Community link given below and check if that helps.

Also, I would suggest you to refer to the suggestions provided by “Andre Da Costa” replied on May 15, 2015 in the following Microsoft Community link given below and check if that helps.

Also, you may try and follow the steps in the link given below and check if it helps.

File Download Stops

How to use the System File Checker tool to repair missing or corrupted system files, please follow the steps in the link provided below.

Note: System File Checker is a utility in Windows that allows users to scan for corruptions in Windows system files and restore corrupted files. This article describes how to run the System File Checker tool (SFC.exe)to scan your system files and to repair missing or corrupted system files in Windows. If a Windows Resource Protection (WRP) file is missing or is corrupted, Windows may not behave as expected.

I hope this information is helpful.

Please do let us know if you need any further assistance, we will be glad to assist you.

Windows Update Stuck At 99% Download

Thank you.