Download Windows 10 21H2/21H1/20H2/2004/1909/1903 ISO and Fix Fail to Install Error
Microsoft has released 12 builds of Windows 10 cumulative updates, which are now available for free download and installation on all Windows users' PCs.
If you're experiencing issues with installing new updates, such as KB5015020, KB5008212, KB5013945, or KB4592449, don't worry - we've got you covered. Effective methods are available to resolve this issue without compromising your data.
Backup system and data before downloading new Windows 10 updates
To avoid data loss or system errors during Windows 10 installation, create a system image and data backups before installing Windows 10 21H2/21H1/20H2/2004/1909/1903 on your PC.
Qiling Backup is a professional Windows backup recovery software that allows users to easily backup Windows 10 with simple clicks.
1. To use Qiling Backup, start by downloading and installing it on your PC. Once installed, connect an external storage device, such as a USB drive, to your computer. This will serve as the backup destination for your data.
2. Launch Qiling Backup, then click on "File Backup", "Disk/partition Backup" or "System Backup".
3. Select the data you want to back up and choose the external hard drive as the backup location, then click Proceed to begin the backup process.
After backing up your Windows system and important data, you can safely download and install Windows 10 with the specified KB updates without worrying about data loss.
Fix Windows 10 21H2/21H1/20H2/2004/1909/1903 failed to install error
If you're experiencing a stuck Windows 10 update or issues with installing specific OS builds like 1809, 1803, 1709, 1703, 1607, or 1507, don't worry, as you can easily resolve these problems by following the methods outlined below.
Method 1. Troubleshoot Windows 10 failed to install error
1. Open Windows Settings and navigate to Update & Security > Troubleshoot.
- To troubleshoot the Windows Update issue, go to the "System and Security" section and tap on "Fix problems with Windows Update".
- Tick Advanced > Enable and check Apply repairs automatically.
- To run the Tap app as administrator, follow these steps: Start by tapping the "Run as administrator" option, which may require you to enter your passcode first. Once you've done that, click the "Next" button to complete the process.
Method 2. Reset Windows Components if Windows 10 21H2/21H1/20H2/2004/1909/1903 update failed
1. Press Windows + X and choose Command Prompt (Admin).
2. Stop BITS, Cryptographic, MSI Installer, and the Windows Update Services.
Then type the below commands at the Command Prompt and hit Enter after you type each command:
net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
3. Rename the SoftwareDistribution and Cartoot2 folder. Then type the following command in the Command Prompt and press Enter after each type:
net start wuauserv
net start cryptSvc
net start bits
net start msiserver
4. Type Exit at the Command Prompt and restart PC.
After installing the Windows 10 updates, you can retry to install new updates with new features in your PC.
Method 3. Fix file system error and clean install Windows 10 update with KB5015020/KB5008212/KB5013945/KB4592449
File System error check is a tool that scans your computer for system errors and Windows update issues, and then fixes them for you.
- Press Windows + X and click on Command Prompt (Admin).
- Type: cd\ and hit Enter.
- Type: sfc /scannow and hit Enter.
- Wait patiently for the check file system process to complete, then Windows 10 updates will install successfully.
After completing the steps, you can click on the provided Windows 10 update links to clean and install them on your PC.
- Download Windows 10
- Download Windows 10 KB5015020
- Download Windows 10 KB5008212
- Download Windows 10 KB5013945
- Download Windows 10 KB4592449
Related Articles
- 6 Solutions to Fix Unmountable Boot Volume Windows 10/8/7
- How to Fix File Explorer Keeps Popping Up Without Losing Data
- How to Clear Memory and Increase RAM in Windows 10/8/7?
- Windows 10 Thinks My Hard Drive is Removable