XADM: Event 1025, Error 0xfffff9bb During EcGenerateNRN or EcGenerateReadReport

One or both of the following events may appear in the Exchange Server 5.5 Application event log: -or-

This warning is generated when the information store tries to create a record that has a non-unique key. The information store tries again with another key that is unique, and the write operation succeeds.

Run Isinteg.exe from the post-Exchange Server 5.5 Service Pack 3 (SP3) information store hotfix or later. See the "More Information" section for version information.

The syntax for Exchange Server 5.5 is: The syntax for Exchange 2000 Server is:

The warning in the "Symptoms" section is not an indication of a failed operation or loss of functionality. The store recovers gracefully from the condition. If you perform the instructions in the "Resolution" section, you can prevent the condition that leads to the Application log warnings.

The post-SP3 store hotfix resolves a number of issues that can cause 1025 Events in the EcGenerateNRN and EcGenerateReadReport functions. The hotfix includes a new version of Isinteg.exe that can fix the apparent problem that generates the events listed in the "Symptoms" section.

The updated files include the following files and versions:



Note that the 1025 Event is a generic warning event, and that this article only applies if the function name and error code match.