Windows 11 Installation Assistant Not Working? Fix It Right Now!

What is Windows 11 Installation Assistant?

The Windows 11 Installation Assistant is a software tool provided by Microsoft that helps users upgrade their existing Windows operating system to Windows 11. It simplifies the installation process by guiding users through the necessary steps and checking system compatibility.

It typically checks if your computer meets the minimum hardware requirements for Windows 11. Once your system passes the compatibility checks, the program assists in downloading the Windows 11 update files and guides you through the installation process. With this tool, users can simplify the download and install process of Windows 11 upgrading, and ensure a smoother transition to the new operating system.

2 common Windows 11 Installation Assistant not working errors

When it comes to Windows Installation Assistant not working, there are 2 common situations that users always encounter.

1. Windows 11 Installation Assistant error code 0x8007007f
The error code 0x8007007f in the Windows 11 Installation Assistant typically occurs due to a compatibility issue between the hardware or drivers on the computer and the Windows 11 operating system. When attempting to install Windows 11 using the installation assistant, the system encounters a problem that prevents the installation from proceeding successfully.

2. Windows 11 Install stuck at 99
The situation occurrence may be related to an unstable Internet connection, system configurations, unstable power supply, or corrupt ISO file. In addition, insufficient system resources such as low disk space, RAM, or processing power might limit the installation process from successfully finalizing the setup.

Many other issues, such as the Windows 11 Installation Assistant being unable to create files, slow downloading, or encountering invalid errors, have also been reported the Windows 11 Installation Assistant not working issue.

Although the situations may vary, there are common causes that can be identified. Continue reading to understand these causes and find ways to resolve them.

Why does Windows 11 Installation Assistant not working?

Except for the possible reasons we mentioned above, there are several other causes that may lead to Windows 11 Installation Assistant failed:

5 fixes for Windows 11 Installation Assistant failed issues

Generally, 5 common solutions can be adopted to solve Windows 11 Installation Assistant not opening issue. However, you can also click here to learn to directly enjoy Windows 11 even if the Windows 11 Installation Assistant not working.

Fix 1: Ensure your device meets the requirements

To know whether your computer can meet the minimum hardware requirements for upgrading to Windows 11, you can use PC Health Check Tool to check the compatibility.

Step 1. Install the tool on your computer and launch it. On the main interface, click on the "Check now" button.

Step 2. If your computer is incompatible, you will receive a warning stating, "This PC doesn't currently meet Windows 11 system requirements." In this case, you can click on "see all results" to view the specific aspects.

However, some users feedback that the Health Check says Yes but Windows update says No. In such case, it is recommended to use a professional Windows 11 test tool to further check your device.

AOMEI Partition Assistant Standard is a professional computer management tool. The feature “Windows 11 Update Checker” can deeply check the device and feedback with a detailed report and clear fixes recommendations.

Step 1. Install and run the Windows 11 update test tool. In the top toolbar, click "Tools”. Select the "Windows 11 Update Checker” option on the drop-down menu.

Step 2. Click the "Start Check” button.

Step 3. Only after several seconds you can get the results. Different from the tool recommended by Microsoft, AOMEI Windows 11 Update Checker allows you to fix it quickly if your PC can't upgrade to Windows 11 due to system restrictions.

See all results: You can see all the items that prevent you from upgrading to Windows 11.

Fix it: You can directly fix the problem with the powerful software due to system restrictions.

Step 4. You can click "Fix it" to see the detailed tutorial about how to upgrade the incompatibility configuration.

Failure to fulfill any of these conditions may result in the Windows 11 Installation Assistant not functioning correctly. Additionally, note that the Installation Assistant is not compatible with ARM-based computers and only supports those with x64 processors. If you need to install Windows 11 on another computer, consider creating a Windows 11 installation media.

Fix 2: Disable anti-virus or conflicted software

Temporarily disable your anti-virus software and third-party programs, as they can sometimes cause issues of Windows 11 Installation Assistant not working.

You can look for the corresponding icon on the taskbar and disable the software using the relevant option.

If the Installation Assistant functions correctly after disabling the antivirus, consider switching to a compatible antivirus product after completing the installation.

Fix 3: Run System File Checker (SFC)

The comprehensive check performed by the SFC identifies and rectifies issues related to file corruption, thus fixing Windows 11 Installation Assistant failed issues.

Step 1. Press Windows + S, type "cmd," and run "Command Prompt" as an administrator from the search results.

Step 2. Enter the command "sfc/scannow" and press Enter.

This command scans protected system files and replaces any corrupted files with a cached copy. Wait for the process to complete and restart your computer to check if the Windows 11 Installation Assistant functions properly.

Fix 4: Run Installation Assistant as administrator

By running it with administrative privileges, the Installation Assistant gains the necessary permissions to modify system settings and access protected resources. This ensures it can perform compatibility checks accurately and evaluate your system for Windows 11 installation.

After downloading it from the Microsoft website, locate the executable file, right-click on it, and choose "Run as administrator."

Please confirm your permission when prompted, and proceed with the installation, following the necessary steps such as accepting the license terms and restarting your computer.

Fix 5: Set compatibility mode

Setting compatibility mode allows you to mimic the environment of older Windows versions, ensuring compatibility with the current operating system, and also enhances the stability of the Installation Assistant, reducing crashes and unexpected behaviors.

Step 1. After downloading the Installation Assistant, right-click the executable file, and select "Properties."

Step 2. Go to the "Compatibility" tab, check "Run this program in compatibility mode for," and choose "Windows 7".

Step 3. Click Apply to save the changes, then run the executable file and see if the window remains open long enough to perform the necessary tasks.

Bonus tip: Easily enjoy Windows 11 even Windows 11 Installation Assistant not working

Actually, there is a shortcut to enjoy Windows 11, even if the Windows 11 Installation Assistant not working. If you upgrade to AOMEI Partition Assistant Professional, you can enjoy the feature “Windows To Go” to create a portable workspace on a USB drive or external hard drive.

It can provide a convenient solution for users who cannot upgrade to Windows 11. With this tool, you can directly enjoy Windows 11 without installation, also regardless of the hardware requirements of the host computer. 

Conclusion

In conclusion, Windows 11 installation assistant not working can be fixed in 5 ways. However, if you want to easily and quickly enjoy Windows 11, it is recommended to directly use the Windows To Go Creator feature provided by AOMEI Partition Assistant.

This versatile software can also be used to fix converting between MBR/GPT, allocate free space, and move installed apps to another drive. Windows Server 2003, 2008 (R2), 2012 (R2), 2016, 2019, 2022, SBS 2003, 2008, and 2011 users can turn to the Server Edition to effectively manage their devices as well.