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PEERDIST_ERROR_INVALID_CONFIGURATION
A configuration value is invalid.
PEERDIST_ERROR_INVALID_CONFIGURATION is Win32 error 4063 (0xFDF) and belongs to Peer Distribution and BranchCache BranchCache configuration validation. 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 BranchCache configuration validation rather than starting with a broad system repair.
Where the result appears
- This result can surface during the BranchCache configuration validation stage of a PeerDist publisher or consumer.
- This result can surface during a BranchCache request where one or more service, policy, cache, or publication settings are outside the accepted contract.
- It can surface during an API call whose diagnosis depends on record effective Group Policy, service mode, cache paths, size limits, and API options.
- It can surface during a recovery path that must correct the specific setting, apply policy, and re-query PeerDist status before reopening content.
Likely causes
- one or more service, policy, cache, or publication settings are outside the accepted contract.
- the caller made a stale assumption during BranchCache configuration validation.
- the observed PeerDist state no longer matched record effective Group Policy, service mode, cache paths, size limits, and API options.
- the wrapper retried before it could correct the specific setting, apply policy, and re-query PeerDist status before reopening content.
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 BranchCache configuration validation because a blind retry can hide stale state or repeat a non-idempotent change.
- record record effective Group Policy, service mode, cache paths, size limits, and API options.
- record the exact PeerDist function involved in BranchCache configuration validation.
- record the object generation used for BranchCache configuration validation.
- record PeerDistSvc status while evaluating one or more service, policy, cache, or publication settings are outside the accepted contract.
- record origin fallback behavior before attempting to correct the specific setting, apply policy, and re-query PeerDist status before reopening content.
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 4063, hexadecimal 0xFDF, 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 one or more service, policy, cache, or publication settings are outside the accepted contract. Prove or disprove that proposition using record effective Group Policy, service mode, cache paths, size limits, and API options together with the exact PeerDist function involved in BranchCache configuration validation. 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 policy sets a cache percentage outside the accepted range. Reading effective policy identifies the value before service restart. The negative case should keep the responsible condition unchanged and confirm error 4063; the recovery case should change only that condition and verify a successful result without an unrecorded side effect.
Suggested diagnostic fields
For error 4063, keep winerr_4063_api, winerr_4063_object, winerr_4063_state_before, winerr_4063_request, winerr_4063_first_status, winerr_4063_verification. These fields distinguish the initial state, requested transition, first status, and verified recovery result.
Handling, retry, and recovery
correct the specific setting, apply policy, and re-query PeerDist status before reopening content 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 BranchCache configuration validation. 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 4063, hexadecimal
0xFDF, and the producing API. - log the target object and observed Peer Distribution and BranchCache BranchCache configuration validation 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
NOT_LICENSED reflects edition entitlement; INVALID_CONFIGURATION means the installed feature has unacceptable settings.
Practical example
A policy sets a cache percentage outside the accepted range.
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 4063, 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 4063.
- Microsoft: Peer Distribution API — reference for error 4063.
- Microsoft: peerdist.h API reference — reference for error 4063.
- Microsoft: BranchCache — reference for error 4063.
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