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ERROR_TOO_MANY_CMDS
The wording refers to the historical Network BIOS command model. NetBIOS exposes name, datagram, and session services, and RFC 1001 treats node implementation limits as configuration parameters. This is not the same as an SMB share being full or a TCP port refusing a connection.
Modern applications rarely manage NetBIOS command blocks directly, so seeing this value is often a sign that a legacy redirector, compatibility component, or translated error path is involved. The correct evidence is the component returning the code and the number of outstanding legacy operations; changing file permissions will not increase a command quota.
Legacy-limit checks
- Identify the API or provider that returned the code before applying modern SMB assumptions.
- Measure outstanding network operations and whether completion processing has stalled.
- Compare with ERROR_TOO_MANY_SESS and ERROR_TOO_MANY_NAMES; they describe different NetBIOS resources.
- Use RFC 1001/1002 terminology when reading traces from NetBIOS-over-TCP implementations.
RFC 1001 NetBIOS concepts and methods · RFC 1002 NetBIOS detailed specification · Windows network redirector architecture
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