ERROR_DS_SINGLE_USER_MODE_FAILED - 8590 (0x218E)
The Directory Service failed to enter single user mode.
Updated: Feb 21, 2026
Technical Meaning
The error code ERROR_DS_SINGLE_USER_MODE_FAILED with the numeric value 8590 and hexadecimal representation 0x218E indicates that the Directory Service encountered an issue while attempting to enter single user mode. Single user mode is a state where only one user can access the directory service, typically used for maintenance or recovery purposes.
Error Details
This error suggests that there was a failure in transitioning the directory service into a controlled environment intended for administrative tasks. The exact nature of the failure could be due to various factors such as incorrect configuration settings, resource constraints, or operational issues within the directory service itself.
Usage Context
This error is relevant when performing operations that require the directory service to enter single user mode. Common scenarios include maintenance activities, troubleshooting, and recovery procedures where exclusive access to the directory data is necessary.
Developer Interpretation
Developers should interpret this error as an indication that the operation intended to transition the directory service into single user mode has failed. This could be due to a variety of underlying issues, such as incorrect configuration or resource limitations. Developers are advised to review the specific context in which the operation was attempted and ensure all prerequisites for entering single user mode are met.
Related Errors
ERROR_DS_NO_ATTRIBUTE_OR_VALUE(1932)ERROR_DS_OBJECT_IS_GROUP(1685)ERROR_DS_DRA_SCHEMA_CONFLICT(2047)
FAQ
Q: What does the error code 8590 mean?
A: The error code 8590, or ERROR_DS_SINGLE_USER_MODE_FAILED, indicates that the Directory Service failed to enter single user mode.
Q: How can I resolve this issue?
A: Review the operation context and ensure all prerequisites for entering single user mode are met. Check configuration settings and resource availability.
Summary
The error ERROR_DS_SINGLE_USER_MODE_FAILED (8590) signifies a failure in transitioning the Directory Service into single user mode. Developers should focus on ensuring proper operational context and addressing any underlying issues that may prevent this transition.