What does Windows error code 5917 (ERROR_CLUSTER_INVALID_STRING_FORMAT) mean?

ERROR_CLUSTER_INVALID_STRING_FORMAT

An input string of characters is not in a valid format for the data it represents.

ERROR_CLUSTER_INVALID_STRING_FORMAT is Win32 error 5917 (0x171D) and belongs to Failover clustering cluster textual property parsing.

Troubleshooting steps

• Record property name and exact redacted string.
• Record expected grammar, units, or identifier format.
• Record locale and encoding.
• Record management command and conversion path.

What to verify

Verify whether an input string is terminated but not valid for the type of data it represents. Check property name and exact redacted string together with expected grammar, units, or identifier format.

Handling, retry, and recovery

Parse and validate the property locally, then send its canonical representation.

Practical example

A script supplies a localized decimal or malformed GUID to a cluster property. Canonical formatting fixes the request.

References

• Microsoft: System Error Codes (4000–5999) — reference for error 5917.
• Microsoft: Failover clustering documentation — reference for error 5917.
• Microsoft: Get-ClusterLog — reference for error 5917.
• Microsoft: Troubleshoot unexpected cluster failover — reference for error 5917.