NTSTATUS 0xC0000513 (STATUS_SMB1_NOT

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: The share requires SMB1, but the client requires SMB2 or a newer dialect.

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STATUS_ENCLAVE_IS_TERMINATING	STATUS_SMR_GARBAGE_COLLECTION_REQUIRED

STATUS_SMB1_NOT_AVAILABLE

STATUS_SMB1_NOT_AVAILABLE is a security and interoperability result, not a generic network outage. The client reached a share that requires SMB1, while the client policy requires SMB2 or newer. The durable remediation is to modernize the server or appliance protocol support, not to treat the code as a share-name error.

How to narrow it down

Collect the negotiated or attempted dialect, server implementation and the reason the server cannot offer SMB2+. SMB security guidance treats SMB1 as obsolete and recommends disabling it when possible. Enabling an obsolete dialect as a broad workaround weakens the environment and can obscure the real compatibility gap.

Use a protocol-aware test client only to identify the server's capabilities. Do not leave a weaker protocol setting enabled after the diagnostic test unless it is an explicit, reviewed compatibility decision.

Evidence that matters

Identify the server or appliance firmware and its supported SMB dialects.
Confirm whether a client policy blocks SMB1 or the server only offers SMB1.
Plan a server-side protocol upgrade or replacement rather than broad SMB1 re-enablement.

References

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