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WU_E_DRV_UNEXPECTED
WU_E_DRV_UNEXPECTED is the generic driver-update result when no more specific WU_E_DRV_* code describes the failure. The earlier driver, device, and synchronization messages are the important evidence.
Best next step
- Find the first driver-specific error in the update log.
- Identify the hardware ID, driver package, source, and whether the failure happened during selection, download, install, or device start.
- Use a targeted driver policy or vendor-supported package only after the failing package is known.
Microsoft: Manage Windows Driver Updates
Microsoft: Windows Update log files
Microsoft: Windows Update error reference
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