Error when launching the installer Windows 10

Александр 0 Reputation points
2026-10-07T09:37:38.3033333+00:00

For an unknown reason, launching this tool on your computer failed. If the problems persist, contact support and provide the error code. Error code: 0x80070002-0x20000

Windows for home | Other | Install and upgrade
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  1. Ramesh 182.1K Reputation points Volunteer Moderator
    2026-10-08T09:38:56.94+00:00

    It's an MCT error that occurs for users in the Russian region. MCT can't download the setup image if you're in that region. The same issue occurs if you try to download the ISO directly or using MCT. Unfortunately, posting direct download links here isn't permitted. If you manage to obtain the ISO, simply mount it and run setup.exe to do the repair installation or in-place upgrade.

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  2. Carl-L 23,100 Reputation points Microsoft External Staff Moderator
    2026-10-08T09:35:49.9366667+00:00

    Hello Александр,

    Welcome to Microsoft Q&A forum.

    Before we proceed, may I know if the AI assistant suggestion helps you? Also, may I know where you download the installation tool from?

    I'm waiting for your reply.

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  3. AI answer

    2026-10-07T09:37:51.55+00:00

    For 0x80070002-0x20000, the supported meaning in Windows setup is: the system cannot find the file specified. For Windows upgrade or installation scenarios, Microsoft guidance says to remove any disks that are not the target install disk.

    Try these steps in order:

    1. Disconnect nonessential external devices Unplug USB drives, external hard drives, printers, scanners, speakers, and other nonessential hardware. Leave only the mouse, keyboard, and display connected.
    2. Remove extra internal or external disks if present If there are other disks attached that are not the one intended for Windows installation, disconnect them temporarily and run the installer again.
    3. Install all important Windows updates first Before retrying the upgrade, make sure all important updates are installed, including hardware driver updates.
    4. Uninstall non-Microsoft antivirus temporarily Third-party antivirus can interfere with upgrades. In Windows, go to Control Panel > Programs > Programs and Features, select the antivirus product, and choose Uninstall. Reinstall it after the upgrade if needed.
    5. If the issue is with Windows Update, repair system files 0x80070002 commonly occurs because files needed for updating are missing or corrupt. Open Command Prompt and run: 
         DISM.exe /Online /Cleanup-image /Restorehealth
    6. Check CBS logs if the error continues The CBS log can help identify the missing file or driver issue. Review: C:\Windows\Logs\CBS\CBS.log
    7. If the installer still fails Contact Microsoft support and provide the full error code.

    Important: If advanced repair steps involve registry changes or importing registry keys, back up the OS disk first because Microsoft recommends a backup before deeper troubleshooting to prevent data loss.

    AI-generated content may be incorrect. Read our transparency notes for more information.

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