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What does Windows error code 777 (ERROR_VERSION_PARSE_ERROR) mean?

 
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ERROR_REQUEST_OUT_OF_SEQUENCE ERROR_BADSTARTPOSITION

ERROR_VERSION_PARSE_ERROR

the supplied version text could not be parsed into the required version representation.

ERROR_VERSION_PARSE_ERROR identifies this condition: The parser rejected a version string because its syntax, component count, numeric range, encoding, or surrounding data did not match the expected format.

Where the result appears

  • manifest and package metadata.
  • provider or protocol version negotiation.
  • configuration-file validation.
  • upgrade tools reading legacy version strings.

What to collect

  • original string with sensitive surrounding data removed.
  • expected grammar and component limits.
  • character encoding and locale.
  • parser position or component that failed.

Handling and recovery

Validate at the input boundary and return a precise message showing the accepted format. Normalize only transformations explicitly permitted by the contract; do not silently reinterpret arbitrary labels as numeric versions.

Common misinterpretation

Lexicographic comparison is not a substitute for successful parsing. For example, textual ordering can place 10 before 2 and can mishandle prerelease labels.

References


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