Get help with Windows 10 upgrade and installation errors

There are many reasons why you might receive an error message when upgrading or installing Windows 10, but common errors can be fixed with a few steps that you can do on your own. Note: An upgrade takes your device from an older version of Windows, such as Windows 7 or Windows 8.1, to Windows 10.

Before searching for a specific error code, try the tips listed in General fixes. If those don’t fix your upgrade or installation problem, check the table of error codes at the bottom of this article.

General fixes

Here are some things you can try to fix upgrade and installation errors:

Unplug any nonessential hardware devices. These could include headphones, printers, scanners speakers, USB flash drives, and external hard drives.

If you’re using a laptop and it’s plugged in to a docking station, undock it.

It’s a good idea to make sure that all important updates are installed before trying to upgrade Windows. This includes updates to hardware drivers on your device.

For information and to make sure you’re up-to-date, see Windows Update: FAQ.

Use Windows Defender to protect your device during the upgrade—non-Microsoft antivirus software can sometimes cause upgrade problems. As long as you have installation media and all required activation information, you can always reinstall the software after you upgrade.

To remove an antivirus application, go to Control Panel\Programs\Programs and Features. Select the program, and then select Uninstall. Select Yes to confirm.

Outdated software can cause problems with a Windows upgrade, so removing old or nonessential applications can help.

If you plan to reinstall the application later, make sure you have the installation media and all required activation information before removing it.

To uninstall software, go to Control Panel\Programs\Programs and Features. Select the program, and then select Uninstall. Select Yes to confirm.

To upgrade to Windows 10, you need enough space on your hard drive for the installation to take place.

To view how much hard drive space is available on your computer, select the Start button, then in the search box on the taskbar, type File Explorer (known as Windows Explorer in Windows 7).

Then select Computer or This PC and look under Hard Disk Drives or under Devices and drives. If there are multiple drives listed, the system drive is the drive that includes a Microsoft Windows logo above the drive icon. You’ll see the amount of available space under the drive.

If it looks like your drive is running low on space, see Tips to free up drive space on your PC.

0xC1900101 Errors

An error that begins with 0xC1900101 is usually a driver error. If you see any of these error codes, try the following steps first to fix the problem. If these steps don’t work, see Resolve Windows 10 upgrade errors for more detailed technical info.

Make sure that your device has enough space. Your device requires at least 16 GB of free space to upgrade a 32-bit OS, or 20 GB for a 64-bit OS. For more info, see Free up drive space in Windows 10.

Run Windows Update a few times. Download and install any available updates in Windows Update, including software updates, hardware updates, and some third-party drivers. Use the troubleshooter for Windows 10 to fix Windows Update errors.

Check third-party drivers and download any updates. You can find third-party drivers and installation instructions for any hardware you’ve added to your device on the manufacturer’s website.

Unplug extra hardware. Remove all external storage devices and drives, docks, and other hardware you might have plugged into your device that isn’t needed for basic functionality.

Check Device Manager for errors. Select the Start button, then in the search box on the taskbar, type device manager. Choose Device Manager from the results. In the window that pops up, look for any device with a yellow exclamation mark beside it (you may have to select each category to switch to the list of devices). Press and hold (or right-click) the device name and select either Update Driver Software or Uninstall to correct the errors.

Remove third-party security software. Make sure you know how to reinstall your programs and that any necessary product keys are on hand. Windows Defender will help protect your device in the meantime.

Repair hard-drive errors. Select the Start button, then in the search box on the taskbar, type command prompt. Choose Command Prompt from the list of results. In the window that pops up, type chkdsk/f C: and press the Enter key. Repairs automatically start on your hard drive, and you’ll be asked to restart your device.

Note: You must have administrator permissions on your device to do this.

Do a clean restart into Windows. Learn how.

Restore and repair system files. Select the Start button, then in the search box on the taskbar, type command prompt. Choose Command Prompt from the list of results. In the window that pops up, type DISM.exe /Online /Cleanup-image /Restorehealth and press the Enter key. (Learn to repair a Windows image)

Note: You must have administrator permissions on your device to do this.

Other Common Errors

The following table lists the most common upgrade and installation errors and some things you can try to fix them. If you continue having problems upgrading or installing Windows 10, contact Microsoft support.

What it means and how to fix it

This indicates that there was a problem downloading and installing the selected update. Windows Update will try again later and there is nothing you need to do at this time.

This could indicate 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.

A cleanup operation from a previous installation attempt is still pending, and a system restart is required to continue the upgrade. Restart the device and run setup again. If restarting device does not resolve the issue, then use the Disk Cleanup utility and clean up the temporary files and the System files. For more information, see Disk cleanup in Windows 10.

A file needed by Windows Update is likely damaged or missing. Try repairing your system files: Select the Start button and type command prompt in the search box on the taskbar. Choose Command Prompt from the list of results. In the window that appears, type DISM.exe /Online /Cleanup-image /Restorehealth and press the Enter key.

This may signify that your PC doesn’t meet the minimum requirements to download or install the upgrade to Windows 10. Learn more about the minimum requirements for Windows 10

This might indicate 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 could 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), select Settings > Change PC settings > Update and recovery > 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 > 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.

This likely indicates that your PC doesn’t have enough space available to install the upgrade.

Free some space on the drive and try again. Get tips for freeing up drive space

The specified disk operation is not supported by the target disk, partition, or volume.

Make sure your machine meets the minimum requirements to install Windows 10.

The system cannot find the file specified.

If you have a disk or disks where you are not installing Windows 10 on, remove those disks.

A driver has caused a problem.

Disable or remove all 3rd party antivirus or antispyware from your system. Disconnect all peripheral devices that are connected to the system, except for the mouse, keyboard and display.

Contact your hardware vendor to obtain updated device drivers.

Windows Setup terminated unexpectedly due to another process running in the background.

When you start Windows by using a normal startup, several applications and services start automatically, and then run in the background. These programs include basic system processes, antivirus software, system utility applications, and other software that has been previously installed. These applications and services can cause interference when you attempt to upgrade to the latest version of Windows 10.

To help you determine whether a background program is interfering with the upgrade, a «clean boot» may be needed. See How to perform a clean boot in Windows.​

Windows Setup terminated unexpectedly due to another process running in the background.

Uninstall any antivirus or antispyware software and update again.

Диагностика ошибок обновления Troubleshooting upgrade errors

Относится к: Applies to

Это тема уровня 300 (умеренно продвинутая). This is a 300 level topic (moderately advanced).
Полный список тем в этой статье см. в разделе Устранение ошибок при обновлении до Windows 10. See Resolve Windows 10 upgrade errors for a full list of topics in this article.

Если обновление до Windows 10 не производится, может потребоваться понять, когда произошла ошибка в процессе обновления. If a Windows 10 upgrade is not successful, it can be very helpful to understand when an error occurred in the upgrade process.

Вкратце, процесс обновления состоит из четырех этапов, которые контролируются установкой Windows: Downlevel, SafeOS, First bootи Second boot. Briefly, the upgrade process consists of four phases that are controlled by Windows Setup: Downlevel, SafeOS, First boot, and Second boot. Компьютер перезагружается после каждого этапа. The computer will reboot once between each phase. Примечание. Прогресс отслеживается в реестре во время процесса обновления с помощью следующего ключа: HKLM\System\Setup\mosetup\volatile\SetupProgress. Note: Progress is tracked in the registry during the upgrade process using the following key: HKLM\System\Setup\mosetup\volatile\SetupProgress. Этот ключ является волатильным и присутствует только в процессе обновления; он содержит двоичное значение в диапазоне 0-100. This key is volatile and only present during the upgrade process; it contains a binary value in the range 0-100.

Эти этапы описаны более подробно ниже. These phases are explained in greater detail below. Во-первых, рассмотрим действия, выполняемые на каждом этапе, так как это влияет на тип ошибок, которые могут быть обнаружены. First, let’s summarize the actions performed during each phase because this affects the type of errors that can be encountered.

Этап нижнего уровня: поскольку этот этап выполняется в исходной ОС, ошибки обновления обычно не видны. Downlevel phase: Because this phase runs on the source OS, upgrade errors are not typically seen. Если ошибка возникает, убедитесь, что исходная ОС работает стабильно. If you do encounter an error, ensure the source OS is stable. Также проследите за тем, чтобы к диску, с которого производится установка Windows, и к диску назначения был непрерывный доступ. Also ensure the Windows setup source and the destination drive are accessible.

Этап SafeOS: во время этого этапа ошибки чаще всего возникают из-за проблем с оборудованием, встроенным ПО или ПО для шифрования дисков сторонних производителей. SafeOS phase: Errors most commonly occur during this phase due to hardware issues, firmware issues, or non-microsoft disk encryption software.

Поскольку на этапе SafeOS компьютер загружается в среду Windows PE, полезным способом устранения неполадок будет загрузка в Windows PE с помощью установочного носителя. Since the computer is booted into Windows PE during the SafeOS phase, a useful troubleshooting technique is to boot into Windows PE using installation media. Можно использовать средство создания носителя для создания загрузочного носителя или такие средства, как Windows ADK, а затем загрузить устройство с этого носителя для проверки на предмет проблем совместимости оборудования и встроенного ПО. You can use the media creation tool to create bootable media, or you can use tools such as the Windows ADK, and then boot your device from this media to test for hardware and firmware compatibility issues.

Если вы попытайтесь использовать средство создания мультимедиа с USB-накопителем, и это сбой с ошибкой 0x80004005 — 0xa001a, это потому, что usb-накопитель использует стиль раздела GPT. If you attempt to use the media creation tool with a USB drive and this fails with error 0x80004005 — 0xa001a, this is because the USB drive is using GPT partition style. Для этого средства необходимо использовать стиль раздела MBR. The tool requires that you use MBR partition style. Вы можете использовать команду DISKPART для преобразования USB-накопителя из GPT в MBR. You can use the DISKPART command to convert the USB drive from GPT to MBR. Дополнительные сведения см. в разделах Изменение диска таблицы разделов GUID в диск записи загрузки. For more information, see Change a GUID Partition Table Disk into a Master Boot Record Disk.

Не продолжайте установку Windows 10 после загрузки с этого носителя. Do not proceed with the Windows 10 installation after booting from this media. Этот метод можно использовать только для выполнения чистой установки, при которой не будут перенесены ваши приложения и параметры, и вам потребуется повторно ввести данные лицензии Windows 10. This method can only be used to perform a clean install which will not migrate any of your apps and settings, and you will be required re-enter your Windows 10 license information.

Если компьютер не загружается в среду Windows PE с созданного вами носителя, это, скорее всего, вызвано проблемой оборудования или встроенного ПО. If the computer does not successfully boot into Windows PE using the media that you created, this is likely due to a hardware or firmware issue. Обратитесь к производителю оборудования и установите все рекомендуемые обновления BIOS и встроенного ПО. Check with your hardware manufacturer and apply any recommended BIOS and firmware updates. Если вам по-прежнему не удается загрузить систему с установочного носителя после установки обновлений, отключите или замените устаревшее оборудование. If you are still unable to boot to installation media after applying updates, disconnect or replace legacy hardware.

Если компьютер успешно загружается в среду Windows PE, но вы не можете просматривать содержимое системного диска на компьютере, возможно, программное обеспечение для шифрования дисков сторонних производителей блокирует возможность выполнить обновление до Windows 10. If the computer successfully boots into Windows PE, but you are not able to browse the system drive on the computer, it is possible that non-Microsoft disk encryption software is blocking your ability to perform a Windows 10 upgrade. Обновите или временно отключите шифрование диска. Update or temporarily remove the disk encryption.

Первый запуск: сбои загрузки на этом этапе встречаются довольно редко и чаще всего вызываются драйверами устройств. First boot phase: Boot failures in this phase are relatively rare, and almost exclusively caused by device drivers. Отключите все периферийные устройства за исключением мыши, клавиатуры и дисплея. Disconnect all peripheral devices except for the mouse, keyboard, and display. Найдите и установите обновленные драйверы устройств, а затем повторите попытку обновления. Obtain and install updated device drivers, then retry the upgrade.

Второй запуск: на этом этапе система работает в целевой операционной системе с использованием новых драйверов. Second boot phase: In this phase, the system is running under the target OS with new drivers. Ошибки при загрузке чаще всего возникают из-за антивирусного программного обеспечения или драйвер-фильтров. Boot failures are most commonly due to anti-virus software or filter drivers. Отключите все периферийные устройства за исключением мыши, клавиатуры и дисплея. Disconnect all peripheral devices except for the mouse, keyboard, and display. Найдите и установите обновленные драйверы устройств, временно удалите антивирусное программное обеспечение, а затем повторите попытку обновления. Obtain and install updated device drivers, temporarily uninstall anti-virus software, then retry the upgrade.

Если описанные выше общие действия по устранению неполадок и приведенные ниже быстрые исправления не решают вашу проблему, можно попытаться проанализировать файлы журнала и разобрать коды ошибок обновления. If the general troubleshooting techniques described above or the quick fixes detailed below do not resolve your issue, you can attempt to analyze log files and interpret upgrade error codes. Также можно Отправлять сведения об ошибках при обновлении до Windows 10 через Центр отзывов, чтобы корпорация Майкрософт диагностировала вашу проблему. You can also Submit Windows 10 upgrade errors using Feedback Hub so that Microsoft can diagnose your issue.

Процесс обновления до Windows 10 The Windows 10 upgrade process

Программа установки Windows используется для обновления компьютера до Windows 10 или выполнения чистой установки. The Windows Setup application is used to upgrade a computer to Windows 10, or to perform a clean installation. Программа установки запускает и перезагружает компьютер, собирает сведения, копирует файлы и создает или настраивает параметры конфигурации. Windows Setup starts and restarts the computer, gathers information, copies files, and creates or adjusts configuration settings.

При обновлении операционной системы программа установки Windows проходит описанные ниже этапы. When performing an operating system upgrade, Windows Setup uses phases described below. Перезагрузка происходит после каждого этапа. A reboot occurs between each of the phases. После первой перезагрузки пользовательский интерфейс будет оставаться неизменным до завершения обновления. After the first reboot, the user interface will remain the same until the upgrade is completed. Отображается процент выполнения, и его значение будет меняться по мере продвижения по этапам, достигнув 100% в конце второго этапа загрузки. Percent progress is displayed and will advance as you move through each phase, reaching 100% at the end of the second boot phase.

Этап нижнего уровня. Этап нижнего уровня –– это этап установки, который запускается внутри предыдущей операционной системы. Downlevel phase: The downlevel phase is run within the previous operating system. Копируются файлы Windows и собираются компоненты установки. Windows files are copied and installation components are gathered.

Этап безопасной ОС: настройка раздела восстановления, распаковка файлов Windows и установка обновлений. Safe OS phase: A recovery partition is configured, Windows files are expanded, and updates are installed. При необходимости подготавливается откат ОС. An OS rollback is prepared if needed. Примеры кодов ошибок: 0x2000C, 0x20017. Example error codes: 0x2000C, 0x20017.

Этап первой загрузки: применение исходных параметров. First boot phase: Initial settings are applied. Примеры кодов ошибок: 0x30018, 0x3000D. Example error codes: 0x30018, 0x3000D.

Этап второй загрузки: применение конечных параметров. Second boot phase: Final settings are applied. Этот этап также называется этапом загрузки при первом включении компьютера. This is also called the OOBE boot phase. Пример кодов ошибки: 0x4000D, 0x40017. Example error codes: 0x4000D, 0x40017.

В конце этапа второй загрузки отображается экран Добро пожаловать в Windows 10, настраиваются параметры, и отображается приглашение войти в Windows 10. At the end of the second boot phase, the Welcome to Windows 10 screen is displayed, preferences are configured, and the Windows 10 sign-in prompt is displayed.

Этап удаления: этот этап наступает при неудачном обновлении (изображения нет). Uninstall phase: This phase occurs if upgrade is unsuccessful (image not shown). Примеры кодов ошибок: 0x50000, 0x50015. Example error codes: 0x50000, 0x50015.

Рис. 1. Этапы успешного обновления до Windows 10 (удаление не показано): Figure 1: Phases of a successful Windows 10 upgrade (uninstall is not shown):

DU = обновления драйверов и устройств. DU = Driver/device updates.
OOBE = запуск при первом включении компьютера. OOBE = Out of box experience.
WIM= образ Windows (Майкрософт) WIM = Windows image (Microsoft)