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0x8007007e

A required module could not be found

Home / Error Codes / Windows components / 0x8007007e

Windows could not find a module required to start or complete the operation.

SeverityMediumSystemsWindows 10 / 11SymbolERROR_MOD_NOT_FOUNDUpdatedAug 31, 2026

Overview

The missing module may belong to Windows, a driver, or an application. The code alone does not prove which file should be downloaded.

Common causes

  • Incomplete application installation
  • Missing runtime or Windows component
  • Damaged system files
  • Architecture mismatch

Symptoms

  • An application will not start
  • Installer custom action fails
  • A module-not-found message appears

Prevention

  • Use complete official installers
  • Keep supported runtimes current
  • Avoid manual DLL replacement

0x8007007e diagnostic evidence

Official-definition grounded

Use the code identity and the affected operation together. The same numeric result can appear in different workflows, so logs and symptoms determine the safest repair branch.

Hexadecimal0X8007007E
Unsigned decimal2147942526
SymbolERROR_MOD_NOT_FOUND
Error familyWindows components
Severity bitFailure
Evidence sourceMicrosoft System Error Codes
1Confirm the operationAn application will not start
2Collect matching evidenceInstaller custom action fails
3Retest the same actionA module-not-found message appears

Definition source: Microsoft System Error Codes. This report preserves the official code identity and does not claim one universal cause.

How to troubleshoot error 0x8007007e

First identify which application, installer, update, or location produced the error. Repair the affected source before changing Windows globally.

1

Identify the failing program or location

Record the application name, file or folder path, and the action that failed. If removable or network storage is involved, reconnect it before retrying.

2

Repair from the official source

Repair or reinstall the affected application using its official publisher package. For path errors, verify that the source and destination still exist and are accessible.

3

Check Windows components only when involved

If the missing item belongs to Windows rather than an application, run DISM and SFC from an administrator terminal, then restart and retry.

Before advanced repair: Do not download a missing DLL or system file from an unknown website. Use the official application installer or supported Windows repair tools.

Official-source grounding

The error meaning is grounded in Microsoft System Error Codes. The visual sequence also follows Microsoft DISM repair guidance. Causes and repair steps vary by system evidence; this report does not claim a universal success rate.

Frequently asked questions

What does 0x8007007e mean?

Windows could not find a module required to start or complete the operation. The missing module may belong to Windows, a driver, or an application. The code alone does not prove which file should be downloaded.

Is 0x8007007e always caused by the same problem?

No. The code identifies a failure condition, but the exact cause depends on the affected operation, Windows build, logs, and recent system changes.

Can Advanced System Repair help with 0x8007007e?

Advanced System Repair can scan for damaged Windows components and related system issues. No tool can guarantee one universal fix; preserve backups and match repair steps to the evidence on the affected PC.