ERROR_DS_ILLEGAL_MOD_OPERATION - 8311 (0x2077)
Illegal modify operation. Some aspect of the modification is not permitted.
Updated: Feb 21, 2026
Technical Meaning
The error code ERROR_DS_ILLEGAL_MOD_OPERATION with the numeric value 8311 and hexadecimal representation 0x2077 signifies that a modification operation attempted on an object or data structure is not permitted. This indicates that there are restrictions in place preventing the specified change from being made.
Error Details
The error ERROR_DS_ILLEGAL_MOD_OPERATION typically arises when a developer or system attempts to modify an object or data structure in a way that violates predefined rules or constraints. These rules can be related to various aspects such as security, integrity, or operational limitations.
Usage Context
This error is commonly encountered within the context of directory service (DS) operations, where certain modifications are restricted due to policy or system-enforced rules. It may also appear in other areas where specific modification operations are not allowed.
Developer Interpretation
When encountering ERROR_DS_ILLEGAL_MOD_OPERATION, developers should interpret it as an indication that a particular operation is not supported under the current context or configuration. This could be due to invalid parameters, incorrect object types, exceeding limits, or unsupported operations.
Related Errors
- ERROR_INVALID_PARAMETER: Indicates that one or more of the supplied parameters are invalid for the operation.
- ERROR_ACCESS_DENIED: Suggests that access to perform the requested modification is denied based on security policies.
- ERROR_TOO_MANY_LINKS: Implies that an attempt was made to exceed a system-imposed limit, such as too many links in a directory structure.
FAQ
Q: What does ERROR_DS_ILLEGAL_MOD_OPERATION mean?
A: It indicates that the attempted modification operation is not permitted due to predefined rules or constraints.
Q: How can I resolve this error?
A: Review the context and parameters of your operation, ensure correct object types are being used, and verify that you are within any applicable limits or constraints.
Summary
ERROR_DS_ILLEGAL_MOD_OPERATION is a generic error code indicating an illegal modification attempt. Developers should focus on validating input parameters, ensuring correct usage contexts, and adhering to system-imposed limitations when encountering this error.