You can use the Windows Update Troubleshooter with the steps mentioned above to fix this issue.
In the case that the steps don't fix Windows Update, you can try to install the Creators Update using the Media Creation Tool.
Use the Disk Cleanup tool available with the OS to free up space on your hard drive.
Quick Tip: If you can't free up enough space, you can connect a USB flash drive of at least 8GB to your computer, and Windows 10 will detect and use it as temporary storage to successfully install the update.
The Windows 10 Creators Update is out, and you can get it in a number of ways, including using Windows Update and doing an in-place upgrade using the Media Creation Tool.
If you're still having problems, you can try the Deployment Image Servicing and Management (DISM) tool to fix your current installation. While typically they mean that your device isn't able to contact Microsoft's update servers, they can also indicate that the System Reserved partition ran out of space.Note: This guide includes general errors that are known to occur during an installation or upgrade process of Windows 10, but they're not necessary problems with the OS.In addition, this guide features recommendations and solutions specific to the Windows 10 Creators Update.You can quickly resolve this issue by restarting the upgrade process, but this time, after the Media Creation Tool completes downloading the installation files, make sure to disconnect your Wi-Fi or Ethernet connection to the internet.After upgrading to the Creators update, reconnect your computer to the internet and check for updates by going to Settings Getting this error trying to download or install the Windows 10 Creators Update means that some files needed to install version 1703 are damaged or missing.Solution 2: While it's rare that your System Reserved partition is less than the required size, sometimes third-party applications, especially security software, may write data to the reserved partition, which can be the reason why your computer cannot update.