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ERROR_INVALID_PEP_INFO_VERSION
The platform power-management information version is unsupported
ERROR_INVALID_PEP_INFO_VERSION is a Win32 system result. PEP-related information is used in platform power and device power-management paths. The error indicates a contract mismatch rather than a normal device-busy condition.
What the result means
The supplied platform extension plug-in information version is invalid. For ERROR_INVALID_PEP_INFO_VERSION, keep the symbolic name, numeric value, and failing operation together in diagnostics; that combination distinguishes the exact failure path from nearby system results.
What to check
- Identify the power-management or firmware component that supplied the information.
- Compare its declared version and structure length with the version supported by the operating system.
- Review recent BIOS, firmware, chipset-driver, and platform-driver updates.
- Check the System event log for ACPI, kernel-power, or device initialization messages around the same time.
Recommended handling
Use a supported information version or update the platform component that owns the contract. Repeated retries with the same payload cannot repair a version mismatch.
Developer notes
Keep platform-specific structures isolated behind a compatibility layer. Validate version and length before dereferencing optional fields, and preserve the original status in telemetry instead of converting it to a generic device failure. When a Win32 API reports ERROR_INVALID_PEP_INFO_VERSION, capture GetLastError() immediately; subsequent cleanup, formatting, or logging calls can replace the thread-local value.
References
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