I have a Windows 10 computer that has been unable to update to the latest released build since 10565 due to an error occurred every time when I was trying to update to any newly released built through Windows Update, see a screenshot below:
As you can see, there isn’t much information there telling me what went wrong. Digging into error log entry in Event Viewer doesn’t reveal much useful info either.
However, if you are experiencing the same as I did, here is what you can do to fix it to continue on the update process to upgrade your Windows 10 to the next release.
Open File Explorer by either clicking on the file folder icon on the Taskbar or pressing Win+E keyboard shortcut, and navigate to C:\ drive that hosts the Windows system.
Turn on the Hidden items option in View tab,
and you will see a hidden folder named $WINDOWS.~BT showing up. It’s a temporary folder that saves all files downloaded and required for Windows 10 build upgrade.
Delete the entire folder first and run the update again. If, however, it didn’t allow you to delete the folder due to the permission issue, try to rename it instead. Successfully done either one of the options will get you through this update error and have the new Windows 10 build updated on your computer.
The error could occur on any Windows 10 build. So if you encountered one when updating your Windows 10 to the latest released build, applying this method should be good enough to get you through it.
However, for some reason, if you encounter another error such as below with code 0xC1420127 during the upgrading, check the free space on your C: drive to make sure it has at least 50 GB of free space left.
If space wasn’t an issue, deleting anything from the following registry key should help you pass this error.
Moving forward, if you encountered another error 0x80070490, it’s time to engage the Windows Update Troubleshooter to help you with this error. It makes sure that your computer is connected to the Internet, and checks to see whether your network adapter and Windows Update services are running correctly.