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Fixed: Windows 11 Update Assistant Stuck at 99 | 100% Working

Don't let your Windows 11 Update Assistant stay stuck at 99%. Follow our expert advice to troubleshoot and resolve this issue, ensuring a seamless update experience for your operating system.

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Updated on Apr 26, 2024

The Windows 11 Update Assistant, also known as the Windows 11 Installation Assistant, is designed to help users upgrade their operating systems seamlessly. Recently, it has become crucial for users seeking the Windows 11 23H2 update. However, some users have encountered a frustrating roadblock - the Windows 11 Installation Assistant stuck at 99%.

If you've found yourself in a situation where the Windows 11 Installation Assistant is taking forever, stuck at 98%, or specifically stuck at 99%, you're not alone. EaseUS will walk you through potential solutions to overcome this obstacle and ensure the smooth completion of your Windows 11 update. We will introduce one of the best tools - EaseUS Partition Master to reinstall Windows 11 and solve more problems.

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Quick Guide to Fix Windows 11 Update Assistant Stuck

First, we'll try some quick solutions to fix the Windows 11 update assistant, which is stuck at 99%. These quick solutions hopefully resolve the issue. Otherwise, we'll try some other practical solutions in the guide later.

1. Keep Waiting: Patience is sometimes the best approach. Allow the update process to continue, as it may take some time.

2. Disconnect peripheral devices: Unplug unnecessary peripherals like Bluetooth devices, printers, USB flash drives, and external hard drives to eliminate potential conflicts during the update.

3. Disable Internet links: Temporarily disconnect from the internet to prevent interference with the update process.

4. Disable third-party antivirus software: Turn off third-party antivirus software to ensure it's not hindering the update.

5. Clean Install Windows 11

If these initial steps don't resolve the issue, a clean install of Windows 11 might be the solution. Here are efficient methods to update to the latest version of Windows 11 using the Windows 11 media creation tool or EaseUS Partition Master Professional:

Guide 1. Download ISO from Microsoft: Obtain the latest Windows 11 ISO file directly from Microsoft's official website.


Guide 2. Use EaseUS Partition Master: Employ this tool to burn the ISO to a USB and create installation media.

EaseUS Partition Master is one of the best ISO burners, and it has an easy-to-use interface that makes it accessible to people of all ages.

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Step 1. Launch EaseUS Partition Master and go to the Bootable Media section. Click "Burn ISO" and click "Next".

Select burn iso

Step 2. Select the ISO image that you have downloaded on your PC, and click "Open".

Select burn iso

Step 3. Click "Next" and select the target USB as destination and click "Burn" to execute the operation.

windows update stuck

How to Fix Windows 11 Update Stuck at 100% | Full Guide

The Windows 11 update downloading process may get stuck at 100% when you upgrade to Windows 11. Luckily, in this guide, you will get efficient and quick solutions to fix the Windows 11 stuck at 100% error. Read more >>

Guide 3. Follow On-Screen Instructions: Install Windows 11 by following the on-screen instructions provided during the process.

Complete Guide: Install Windows 11 From ISO Files

By incorporating these transitional steps and streamlined methods, you can navigate through and resolve issues associated with the Windows 11 Update Assistant. Don't forget to share this tutorial if you think it's helpful.


5 Ways to Fix Windows 11 Update Assistant Stuck at 99

If the issue still exists and is not fixed through quick solutions, you can try these proper and practical solutions step-by-step to fix the Windows 11 update assistant stuck at 99% anyway.

1. Run the Installer from the Media Folder

If your Windows Upgrade Assistant is stuck at 99% for an extended period, try resolving it by running the setup from the Media folder. Do this without restarting your computer to ensure the Media folder remains accessible on your device.

Follow the steps:

Step 1. Go to File Explorer. In the search bar, type C:\$GetCurrent and press Enter button.

Step 2. It might be hidden, and you can't see C:\$GetCurrent. You can go to the View tab and check the box associated with Hidden items to unhide it.

Step 3. In this folder, you see the Media folder. Copy and paste it to the Desktop and restart your PC.

Step 4. Copy the Media folder from the Desktop to the C:\$GetCurrent folder, then open the Media folder and double-click on Setup.

 Step 5. Follow the on-screen instructions to finish the process.

follow the instructions

Read Also:

2. Stop and Restart the Windows Update Service

You can stop and restart the Windows update services. This action can potentially fix the issue of the Windows 11 update assistant stuck at 99%.

Follow the steps:

Step 1. Search for "Services" in the search bar of the taskbar. Once it appears, click on it to launch it.

Step 2. In the list of services, locate the Windows Update, right-click on it, and then click "Restart" from the dropdown menu.

choose windows update

3. Extend the Partition

When you update to Windows 11, the update assistant needs to download and install many files. If the partition that contains your Windows 11 installation is too small, the update assistant may run out of space and get stuck.

Extending the partition gives the update assistant more space to download and install the necessary files. This may fix the problem of the update assistant getting stuck at 99%. EaseUS Partition Master allows you to easily expand your C drive storage and continue with the Windows 11 update process.

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Follow the steps:

Step 1. Locate the Target Partition.

Go to Partition Manager, locate the target partition and select "Resize/Move".

Select target partition to extend

Step 2. Extend the Target Partition.

Drag the partition panel rightward or leftward to add the unallocated space into your current partition and click "OK" to confirm.

choose another drive to allocate space

Extra Option: Get Space from Another Drive

If there is not enough unallocated space on your disk, right-click on a big partition with enough free space, select "Allocate space".

Then select the target partition that you want to extend at the allocate space to column.

choose another drive to allocate space

Step 3. Execute Operations to Extend Partition.

Drag the dots of the target partition into the unallocated space and click "OK".

finish extending partition

Then Click the "Execute Task" button and click "Apply" to keep all the changes. 

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4. Run Windows Update Troubleshooting

Windows offers various built-in troubleshooters designed to address issues on your device. Among them, the Windows Update troubleshooter is a valuable tool to resolve problems that may arise during system updates.

Follow the steps:

Step 1. Go to the Windows 11 Settings by pressing the Windows + I buttons simultaneously.

Step 2. Navigate to System > Troubleshoot > Windows Update. Select the Run the troubleshooter option. The tool will then detect issues and fix them automatically.

windows troubleshooter

5. Perform a System Restore

If you've created a system restore point where the Windows Update Assistant functions properly, you can execute a system restore using that specific restore point to fix the Windows Update Assistant stuck at 99%. This method is only effective if you create a system restore point in advance while working correctly.

Note: You must save all your files and close all programs before restoring the system.

Follow the steps:

Step 1. Go to "System Properties" by typing "Create a restore point" in the taskbar's search box.

Step 2. Navigate to the "System Protection" tab to see the System Restore option under the System Restore section. If this option is grayed out, it means you haven't created a system restore point earlier, but if you see that it's active, click on it.

Step 3. A popup window will be opened. Click "Next".

system restore

Step 4. Choose the restore point you want to use, click Next, and then click Finish.

Step 5. The process will take some time, so please wait and let it be completed.

Share this guide with others facing similar challenges, and let's ensure everyone enjoys the benefits of a smoothly updated Windows 11 operating system.



It's a very frustrating experience when we have been waiting many hours to update the Windows 11, but after a long wait, we see Windows 11 update assistant stuck at 99%. To tackle this issue, you can start with quick fixes from this guide to see whether the issue is resolved. Otherwise, try other solutions step-by-step, as discussed in this guide.

For those persistent issues, a clean install using the Windows 11 media creation tool or EaseUS Partition Master is a reliable option. For a seamless update process and a well-optimized system, consider EaseUS Partition Master.

Free Download 

Windows 11/10/8/7100% Secure

FAQs About Windows 11 Update Assistant Stuck at 99

If you have more queries about the Windows 11 update assistant stuck at 99%, read these FAQs to get the answer.

1. What should you do if the Windows 11 update is stuck?

If your Windows 11 update is stuck, first, exercise patience. Allow the update process to continue, as it might need more time to complete. If the issue persists, consider disconnecting peripheral devices, disabling internet links, and checking for third-party antivirus interference. A clean install using Windows 11 media creation tool or EaseUS Partition Master can also be a viable solution.

2. Why is my Windows 11 update stuck at 100%?

A Windows 11 update stuck at 100% could be due to various reasons, such as conflicting peripheral devices, network issues, or third-party antivirus software. Try disconnecting unnecessary peripherals, ensuring a stable internet connection, and temporarily disabling antivirus software. If the problem persists, explore advanced solutions like running troubleshooters, extending the partition, or performing a system restore.

3. How do I fix the Windows 11 installation stuck at 99?

If your Windows 11 installation is stuck at 99, you can take several steps to resolve the issue. Initially, try waiting, disconnecting peripherals, and disabling internet links. If these quick solutions don't work, consider more thorough approaches, including running the installer from the media folder, stopping and restarting the Windows Update service, extending the partition, utilizing Windows Update Troubleshooter, or performing a system restore. Each method addresses specific aspects of the installation process and may help overcome the 99% hang.

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About the Author

Updated by Sherly

Sherly joined EaseUS in 2022 and she has always loved writing articles and enjoys the fun they bring. She receives professional training here, focusing on product performance and other relative knowledge. She has written over 200 articles to help people overcome computing issues.

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Written by Cici

Cici is the junior editor of the writing team of EaseUS. She accepted the systematic training on computers at EaseUS for over one year. Now, she wrote a lot of professional articles to help people resolve the issues of hard drive corruption, computer boot errors, and disk partition problems.

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Product Reviews

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