Windows System Errors

Windows System Errors 69 — ERROR_TOO_MANY_SESS

In Windows System Errors, code 69 is ERROR_TOO_MANY_SESS. The official source describes it as “The network BIOS session limit was exceeded.”. Its concrete cause depends on the operation and surrounding message.

Code69
SymbolERROR_TOO_MANY_SESS
Source confidencehigh

Official definition

The network BIOS session limit was exceeded.

In plain language

In Windows System Errors, code 69 is ERROR_TOO_MANY_SESS. The official source describes it as “The network BIOS session limit was exceeded.”. 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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