Windows Update error 0x8007001F: Attached device not functioning
Updated
Cleared for publishing after the automated checks on .
What the code means
A device attached to the system is not functioning. (System Error Codes (0-499))
Setup extended codes for 0x8007001F
| Suffix | Phase | What it means |
|---|---|---|
| 0x3000D | SP_EXECUTION_FIRST_BOOT | Error in the FIRST_BOOT phase during the MIGRATE_DATA operation (phase 3, operation D). (Windows 10 upgrade error codes) |
| 0x4000D | SP_EXECUTION_OOBE_BOOT | Error in the OOBE_BOOT phase during the MIGRATE_DATA operation (phase 4, operation D). (Windows 10 upgrade error codes) |
Code facts for 0x8007001F
| Code as Windows shows it | 0x8007001F |
|---|---|
| Type | Win32 error code |
| Symbolic name | ERROR_GEN_FAILURE |
| Hexadecimal, 8 digits | 0x8007001F |
| Decimal (unsigned) | 2147942431 |
| Decimal (signed 32-bit) | -2147024865 |
| Severity | failure |
| Facility | 7 FACILITY_WIN32 |
| Windows error number inside this code | 31 ERROR_GEN_FAILURE: A device attached to the system is not functioning. |
| Group | Windows Update errors |
Read with care
- Microsoft says these phase and operation values reflect the Windows 10 upgrade process (version 1607) and might change in later releases. (Windows 10 upgrade error codes)
Code facts: System Error Codes (0-499) (Microsoft Learn, CC BY 4.0), checked Nov 14, 2026.
Code facts: Windows 10 upgrade error codes (Microsoft Learn, CC BY 4.0), checked Nov 14, 2026.
Where this error shows up
This code shows up while Windows Update or a Windows upgrade is downloading, installing or setting up.
Applies to
Windows 11 (the upgrade errors page lists this code only in its Windows 11 tab). Other step groups give their own scope: Windows 10 only.
Try these first
These steps carry no risk flag in the data. They keep the order of the full list below, which is not reordered. A step without a flag is not a promise that it is safe for your computer.
5 steps to try, in order
Steps are grouped by the Microsoft page they come from. The page lists only what those pages give; other causes of 0x8007001F are not covered. 2 steps are flagged.
If this page and Microsoft's page differ, follow Microsoft's page.
From: Get help with Windows upgrade and installation errors
Source: Get help with Windows upgrade and installation errors (Microsoft Support), checked Nov 14, 2026. Summary in our own words; Microsoft's page has the full steps.
Microsoft lists this code only in the Windows 11 tab of its upgrade and installation errors page.
Disconnect external devices
Unplug external devices while the installation runs.
Update the drivers
Make sure all drivers are up to date.
Try Safe Mode
Changes boot or startupMicrosoft's row also suggests trying the upgrade in Safe Mode.
Microsoft advises: Keep track of what you change so you can undo it, and return the PC to a normal startup when you are done. (How to perform a clean boot in Windows)
From: Windows 10 upgrade resolution procedures
Source: Windows 10 upgrade resolution procedures (Microsoft Learn), checked Nov 14, 2026. © Microsoft, licensed under CC BY 4.0. Steps shortened and reworded by PC Driver Update.
Microsoft's Windows 10 upgrade resolution procedures (a page for IT professionals; applies to Windows 10).
0x8007001F - 0x4000D: find the failing device (IT)
Windows 10 only.
General failure: a device attached to the system isn't functioning. Analyze log files in order to determine the device that isn't functioning properly. Disconnect, update, or replace the device.
0x8007001F - 0x3000D: user profile problems (IT)
Windows 10 only.
Can delete dataChanges the registryAnalyze log files to find the files or registry entries that block data migration. This can be a user profile problem: corrupt registry entries under HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList or invalid files in the \Users directory (after an incomplete earlier upgrade, also in Windows.old\Users).
Make sure deleted accounts aren't still present in the registry and that files under \Users are valid; delete the invalid files or user profiles that the Windows setup log files name.
Microsoft advises: Back up your personal files before you try these fixes. (Back up and restore with Windows Backup)
Microsoft advises: Back up the registry before you change it, so you can restore it if a problem occurs. (How to back up and restore the registry in Windows)
Stop and get help
If these steps do not fix the problem, or you are not sure about a step, stop and get help from Microsoft Support or from the maker of your PC. Stop at once if the data on this computer is at risk: back up your files first, or ask a professional before you go on.
Dates and review
| Automated checks | first check: ; second check: ; third check: ; fourth check: |
|---|---|
| Microsoft pages read |
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| Review status | Cleared for publishing after the automated checks on . |