The table on this page lists the most common upgrade and installation errors, and a few things you can try to fix the problems. If you continue having problems upgrading or installing Windows 10, contact Microsoft support.
This error might mean that a file needed by Windows Update is damaged or missing.
This error might mean that a driver or other software on your PC isn't compatible with the upgrade to Windows 10. For info about how to fix this problem, contact Microsoft support.
This error might mean that the upgrade process was interrupted because you accidentally restarted your PC or signed out of your PC. Try upgrading again and make sure your PC is plugged in and stays turned on.
This error might mean that your PC couldn't connect to the Windows Update servers. If you're using a VPN connection to connect to a work network, disconnect from the network and turn off the VPN software (if applicable), and try upgrading again.
The error could also mean there isn't enough free space in the System Reserved partition. You might be able to fix this problem by using third-party software to increase the size of the System Reserved partition.
Error: We couldn't complete the updates. Undoing changes. Don't turn off your computer.
Error: Failure configuring Windows Updates. Reverting changes.
These are generic errors that might appear any time a Windows update fails. You'll need to determine the specific error code to investigate how to best resolve this problem.
You can find the error code for the failed update by viewing your update history. Look for the update that wasn't installed, note the error code, and then contact Microsoft support.
To view your update history in Windows 8.1:
Open Windows Update by swiping in from the right edge of the screen (or, if you're using a mouse, pointing to the lower-right corner of the screen and moving the mouse pointer up), Selecting Settings, choosing Change PC settings, and then selecting Update and recovery.
Select View your update history.
To view your update history in Windows 7:
Select the Start button. In the search box, type Update, and then, in the list of results, Select Windows Update.
Click View update history.
Error: The update isn't applicable to your computer.
This error might mean that your PC doesn't have the required updates installed. Check to make sure that all important updates are installed on your PC before you try upgrading.
Code 0xC1900208 – 0x4000C
This error might mean that an incompatible app installed on your PC is blocking the upgrade process from completing. Check to make sure that any incompatible apps are uninstalled and then try upgrading again.
Code 0xC1900200 – 0x20008
Code 0xC1900202 – 0x20008
This error might mean that your PC doesn’t meet the minimum requirements to download or install the upgrade to Windows 10.
Code 0x80070070 – 0x50011
Code 0x80070070 – 0x50012
Code 0x80070070 – 0x60000
This error might mean that your PC doesn’t have enough space available to install the upgrade. Free some space on the drive and try again.
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