ERROR_RESOURCE_NOT_AVAILABLE - 5006 (0x138E)
The cluster resource is not available.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_RESOURCE_NOT_AVAILABLE error code, represented by the numeric value 5006 or the hexadecimal value 0x138E, signifies that a specific cluster resource required for an operation is not currently available. This can occur in various scenarios where a cluster node or resource group is expected to be operational but fails to meet this expectation.
Error Details
This error typically arises when a Windows Failover Cluster (FC) operation encounters a situation where the necessary resources are unavailable, such as a missing node, an unresponsive service, or a resource that has been taken offline. The exact nature of the resource can vary depending on the context in which the error is encountered.
Usage Context
This error code can be observed in various cluster management operations, including but not limited to:
- Failover operations
- Resource group state changes
- Cluster node status checks
- Service availability verification
Developer Interpretation
When encountering this error, developers should consider the following aspects of their application or script that might have caused it:
- Ensure all required cluster resources are online and available.
- Verify that the operation context is correct and matches the expected state of the cluster.
- Validate input parameters to ensure they align with the requirements for the specific operation being performed.
Related Errors
ERROR_CLUSTER_NOT_FOUND(5001)ERROR_NODE_NOT_FOUND(5002)ERROR_SERVICE_NOT_AVAILABLE(5004)
FAQ
Q: What does ERROR_RESOURCE_NOT_AVAILABLE mean?
A: It indicates that a required cluster resource is not available.
Q: How can I troubleshoot this error?
A: Review the operation context, validate parameters, and ensure all necessary resources are online.
Q: Is this error critical for system stability?
A: While it may indicate an issue with resource availability, it does not necessarily compromise overall system stability. However, addressing the underlying cause is recommended to maintain optimal cluster performance.
Summary
The ERROR_RESOURCE_NOT_AVAILABLE (5006) error code in Windows Failover Clusters indicates that a required resource is unavailable for an operation. Developers should ensure all necessary resources are available and correctly configured to avoid this error.