Knowledge

ERROR_DS_DUP_MSDS_INTID - 8597 (0x2195)

Schema update failed: Duplicate msDS-INtId. Retry the operation.

Updated: Feb 21, 2026

Technical Background

The ERROR_DS_DUP_MSDS_INTID error is a specific error code encountered during schema updates in Active Directory. It indicates that the update operation failed because of a duplicate msDS-INtId value, which is used to uniquely identify objects within the directory.

Error Details

  • Error Name: ERROR_DS_DUP_MSDS_INTID
  • Numeric Code: 8597 (0x2195)
  • Short Description: Schema update failed due to duplicate msDS-INtId. Retry the operation.

Common Causes

The error is typically caused by attempting to add an object with a msDS-INtId value that already exists in the directory. This can happen if:

  • The same identifier was used for different objects during schema updates or modifications.
  • There is a programming error where duplicate identifiers are being generated unintentionally.

Real-World Context

This error occurs when performing operations such as adding, modifying, or deleting objects within an Active Directory environment. It is critical to ensure that msDS-INtId values are unique across the directory to maintain data integrity and prevent conflicts during schema updates.

Is This Error Critical?

The error can be critical if it prevents necessary schema updates from completing successfully. Ensuring that all operations respect the uniqueness of msDS-INtId is essential for maintaining a consistent and reliable Active Directory environment.

How to Diagnose

To diagnose this issue, follow these steps:

  1. Review Operation Context: Examine the context in which the schema update was attempted to identify any potential programming errors or misconfigurations.
  2. Validate Parameters: Ensure that all parameters used during the operation are correct and do not contain duplicate msDS-INtId values.
  3. Confirm Object Types: Verify that the objects being manipulated have unique identifiers, especially when dealing with complex directory structures.
  4. Verify Input Data: Check for any data corruption or inconsistencies that might be causing the error.
  5. Check Limits or Constraints: Confirm that there are no system limits or constraints that could prevent the operation from completing successfully.

How to Resolve

To resolve this issue, take the following actions:

  1. Correct Parameter Usage: Ensure that all parameters used in the schema update operations are correct and unique.
  2. Adjust Operation Context: Modify the context of the operation if necessary to avoid conflicts with existing msDS-INtId values.
  3. Restore Data: If data corruption is suspected, restore from a known good backup or repair any corrupted entries.
  4. Retry Operation with Valid Inputs: Once all issues are resolved, retry the schema update operation.

Developer Notes

Developers should ensure that their code properly validates and generates unique msDS-INtId values to prevent this error from occurring. Regularly testing for uniqueness during development can help catch potential issues early.

Related Errors

  • ERROR_DS_DUP_NAME: Duplicate name detected in the directory.
  • ERROR_DS_OBJECT_CLASS_VIOLATION: Object class violation encountered during schema update.

FAQ

Q: What does ERROR_DS_DUP_MSDS_INTID mean?

A: It indicates that a duplicate msDS-INtId value was used during an Active Directory schema update, causing the operation to fail. Retrying with unique identifiers is necessary.

Q: How can I prevent this error from occurring?

A: Ensure that all operations respect the uniqueness of msDS-INtId values and validate parameters before performing schema updates.

Summary

The ERROR_DS_DUP_MSDS_INTID error occurs when a duplicate msDS-INtId value is used during an Active Directory schema update. This can be caused by programming errors or data inconsistencies. Proper validation of parameters and ensuring unique identifiers are critical to prevent this issue.