Windows System Errors

Windows System Errors 85 — ERROR_ALREADY_ASSIGNED

In Windows System Errors, code 85 is ERROR_ALREADY_ASSIGNED. The official source describes it as “The local device name is already in use.”. Its concrete cause depends on the operation and surrounding message.

Code85
SymbolERROR_ALREADY_ASSIGNED
Source confidencehigh

Official definition

The local device name is already in use.

In plain language

In Windows System Errors, code 85 is ERROR_ALREADY_ASSIGNED. The official source describes it as “The local device name is already in use.”. Its concrete cause depends on the operation and surrounding message.

Context to inspect

  • The surrounding operation, version and subsystem determine the actual cause.
  • The same numeric value can mean something different in another namespace.

Safe first checks

  1. Confirm which product, protocol or subsystem produced the code.
  2. Read the full surrounding error message and inspect relevant logs.
  3. Compare the code with the linked authoritative documentation before changing configuration.

Important context

The surrounding operation, version and subsystem determine the actual cause.

Authoritative source

Microsoft Learn — System Error Codes

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