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PEERDIST_ERROR_CONTENTINFO_VERSION_UNSUPPORTED
The version of the supplied content information is not supported.
PEERDIST_ERROR_CONTENTINFO_VERSION_UNSUPPORTED is Win32 error 4050 (0xFD2) and belongs to Peer Distribution and BranchCache content information parsing. The system description identifies the immediate condition but does not identify the caller, object, policy, device, service instance, or transition that produced it.
Interpret this result at the API boundary that returned it. Capture it before logging, cleanup, or another Windows call can replace the thread-local last-error value. Compare the recorded inputs with the documented precondition for Peer Distribution and BranchCache content information parsing rather than starting with a broad system repair.
Where the result appears
- This result can surface during the content information parsing stage of a PeerDist publisher or consumer.
- This result can surface during a BranchCache request where the content-information blob declares a format version the local PeerDist implementation cannot consume.
- It can surface during an API call whose diagnosis depends on capture the first bytes, declared version, producer OS, and API version.
- It can surface during a recovery path that must regenerate content information with a mutually supported version or route the request to a compatible endpoint.
Likely causes
- the content-information blob declares a format version the local PeerDist implementation cannot consume.
- the caller made a stale assumption during content information parsing.
- the observed PeerDist state no longer matched capture the first bytes, declared version, producer OS, and API version.
- the wrapper retried before it could regenerate content information with a mutually supported version or route the request to a compatible endpoint.
Diagnostic sequence
Diagnosis of it starts with the exact request type: read, write, create, transition, validation, cancellation, or administrative action. Identify the object generation and subsystem owner, then decide whether the failure happened before side effects, during a partial transition, or after completion. This ordering matters in Peer Distribution and BranchCache content information parsing because a blind retry can hide stale state or repeat a non-idempotent change.
- record capture the first bytes, declared version, producer OS, and API version.
- record the exact PeerDist function involved in content information parsing.
- record the object generation used for content information parsing.
- record PeerDistSvc status while evaluating the content-information blob declares a format version the local PeerDist implementation cannot consume.
- record origin fallback behavior before attempting to regenerate content information with a mutually supported version or route the request to a compatible endpoint.
Correlate it with the owning component’s operational log, the Windows System log, and any subsystem trace. Telemetry for this Win32 error should preserve native identifiers such as a path or file ID, handle generation, node or peer identity, policy ID, object version, offset and length, or transaction token. Retain decimal 4050, hexadecimal 0xFD2, and the producing API even when a localized message is also shown.
State boundary to prove
The decisive boundary for this Win32 error is whether the content-information blob declares a format version the local PeerDist implementation cannot consume. Prove or disprove that proposition using capture the first bytes, declared version, producer OS, and API version together with the exact PeerDist function involved in content information parsing. When observations for this Win32 error disagree, preserve both and inspect the transition between them instead of choosing the more convenient value.
A focused validation for this Win32 error should recreate the relevant part of this situation: a publisher upgraded before branch clients; clients reject the new content-information version while older blobs still open. The negative case should keep the responsible condition unchanged and confirm error 4050; the recovery case should change only that condition and verify a successful result without an unrecorded side effect.
Suggested diagnostic fields
For error 4050, keep winerr_4050_api, winerr_4050_object, winerr_4050_state_before, winerr_4050_request, winerr_4050_first_status, winerr_4050_verification. These fields distinguish the initial state, requested transition, first status, and verified recovery result.
Handling, retry, and recovery
regenerate content information with a mutually supported version or route the request to a compatible endpoint A retry is justified only after the recorded state that produced this specific code has changed.
Retry it only after evidence shows a change in Peer Distribution and BranchCache content information parsing. Initialization, asynchronous completion, recall, or service readiness can justify bounded backoff; malformed metadata, invalid identifiers, policy rejection, unsupported versions, and integrity failures require correction. Before repeating a write or configuration operation after it, query completion state explicitly.
What to log for support and telemetry
- log decimal 4050, hexadecimal
0xFD2, and the producing API. - log the target object and observed Peer Distribution and BranchCache content information parsing state.
- log caller identity, process and thread IDs, machine or node identity, and UTC time.
- log attempt number, elapsed time, previous result, and any partial side effect.
- retain the first lower-level or component-specific error before Win32 translation.
Difference from nearby codes
PEERDIST_ERROR_VERSION_UNSUPPORTED concerns a requested API or operation version more generally.
Practical example
A publisher upgraded before branch clients; clients reject the new content-information version while older blobs still open.
Developer and administrator guidance
Code that handles it should keep its Win32 domain visible across exceptions, RPC responses, and JSON or REST wrappers. Administrators should verify the subsystem evidence before changing policy, deleting state, forcing failover, or replacing storage. Recovery is demonstrated only when a test observes 4050, changes the responsible condition, and confirms that the same operation succeeds without hidden data loss.
References
- Microsoft: System Error Codes (4000–5999) — reference for error 4050.
- Microsoft: Peer Distribution API — reference for error 4050.
- Microsoft: peerdist.h API reference — reference for error 4050.
- Microsoft: BranchCache — reference for error 4050.
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