HRESULT 0x8034001D (ERROR_NDIS_ALREADY

Status / error code:

Category:

Constant name:

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Description:

The requested file is already mapped by NDIS.

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ERROR_NDIS_ERROR_READING_FILE	ERROR_NDIS_RESOURCE_CONFLICT

ERROR_NDIS_ALREADY_MAPPED

ERROR_NDIS_ALREADY_MAPPED The component attempted to map a file that is already mapped. This is usually a lifecycle or cleanup bug: a previous mapping was retained, or concurrent paths tried to create the same mapping.

What to check

Make mapping setup idempotent and guard it against concurrent initialization paths.
Verify that the corresponding unmap or cleanup path runs on reset, unbind, and failure.
Do not force another mapping on top of the existing one; first reconcile ownership state.

Microsoft: NDIS status values

Microsoft: netsh trace

Microsoft: !ndiskd.netadapter

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