5 Effective Fixes to 0x8007007f Windows 11 Update Error

Windows 11 update error: 0x8007007f

Windows 11 has been released for more than one year, and there is a growing number of users who choose to upgrade to Windows 11 to enjoy the new, powerful features. Microsoft offers three ways to help users upgrade Windows 10 to Windows 11:

1. Windows Update in Settings (recommended)
2. Windows 11 Installation Assistant
3. Windows 11 Installation Media

However, when some users do the upgrade through Windows 11 Installation Assistant, they receive the error code 0x8007007f.

How does this happen? There are five possible causes:

• Insufficient permissions
• Outdated Windows 10 version
• Not enough storage
• Outdated GPU drivers
• Corrupted system files

How to fix error code 0x8007007f in Windows 11

Before you go through the specific solutions, please run the PC Health Check app to confirm your device meets the Windows 11 minimum system requirements. Then choose one fix according to your situation.

👉 Fix 1: run Windows 11 Installation Assistant as an Admin
👉 Fix 2: update Windows 10 to the latest version
👉 Fix 3: free up disk space
👉 Fix 4: update graphics drivers
👉 Fix 5: perform SFC scan

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Fix 1: run Windows 11 Installation Assistant as an Admin

Windows 0x8007007f error occurs if you are running the Windows 11 Installation Assistant without administrative privileges. Follow these steps to fix it:

1. Right-click on the file Windows11InstallationAssistant.exe and select Run as administrator.

2. In the User Account Control window, click Yes.
3. Follow the on-screen instructions to start installing Windows 11.

Fix 2: update Windows 10 to the latest version

To run Installation Assistant, your PC must have Windows 10, version 2004 or higher installed. Thus, you can fix error 0x8007007f by installing the latest updates on your PC:

1. Go to Start > Settings > Update & Security.
2. On the Windows Update page, click Check for updates. If updates are available, install them.

3. Run Windows 11 Installation Assistant again to see if the error still exists.

Fix 3: free up disk space

To upgrade to Windows 11, your PC must have 9 GB of free disk space to download Windows 11. If the system drive has not enough storage space, you can run the Disk Cleanup utility to free up disk space:

1. Press Win + E to open File Explorer.
2. Right-click on the system drive (usually C drive) and select Properties.
3. Under the General tab, find and click the Disk Cleanup button.

4. In the Disk Cleanup window, select the files to delete and click OK.

5. In the pop-up window, click Delete Files to confirm the operation.
6. To gain more space, open the Disk Cleanup window again and select Clean up system files in the left bottom.
7. Disk Cleanup will calculate how much space you will be able to free on (C:). When the process is finished, select Windows Update Cleanup to delete and click OK.

8. Launch Windows 11 Installation Assistant again to see if Windows update 0x8007007f error is fixed.

Fix 4: update graphics drivers

Using obsolete graphics drivers will also cause 0x8007007f error. Follow the instructions below to fix it:

1. Right-click on the Start menu and select Device Manager.
2. In the Device Manager window, expand the Display adapters option to view your graphics drivers. Right-click on the driver and choose the Update driver option.

3. Then choose Search automatically for drivers in the pop-up window. Wait when the wizard looks for any new drivers. If it finds any new drivers, it will install them automatically without bothering you.

Fix 5: perform SFC scan

If Windows update 0x8007007f error is caused by corrupted system files, you can run SFC scan to fix it:

1. Type “cmd” in the search box, and select Run as administrator for the best match Command Prompt.
2. In the Command Prompt window, type sfc /scannow and press Enter. This command will scan all protected system files and replace corrupted files with a cached copy.

3. Wait until the verification process is done. Check if the error is solved now.

Bonus tip: backup Windows 10 before upgrading to Windows 11

It is better safe than sorry. To avoid data loss caused by Windows 11 update errors, it is suggested that you backup Windows 10 before doing the upgrade. In this way, if you fail to upgrade to Windows 11 and your computer falls into a bad situation, you can always restore your computer from the backup image.

How to backup Windows 10 efficiently? The best free Windows backup software – AOMEI Backupper Standard can give you a hand.

• It offers multiple backup types, including System/Disk/Partition/File/Cloud Backup.
• It supports various backup devices. You can backup to external hard drive, USB stick, network share and cloud storage, etc.
• You are able to create automatic backup as per your need. Automatic backup runs in the way of incremental backup by default to save disk space for you.
• All editions of Windows 11, 10, 8.1, 8, 7, Vista and XP are supported.

Download this wonderful backup freeware now. To create a system image on your PC, just click Backup > System Backup.

To sum up

There are five effective methods offered on this page to help you fix 0x8007007f Windows 11 update error. You may pick up one method according to your situation. To avoid any data loss during Windows 11 update, you may backup Windows 10 with AOMEI Backupper in advance. If you upgrade to higher editions of AOMEI Backupper, you can clone NVMe boot drive with the Disk Clone feature. Just give it a shot!