| Event Id | 1169 |
| Source | MSExchangeIS Mailbox Store |
| Description | Error <folder id> deleting unused index <error code> from folder <index name>. |
| Event Information | By design, unused indexes are deleted from folders after a specified time period. An error occurred during an attempt to delete this index. The index may have been deleted by a previous event or it may be in use. Verify that the folder is not in use and that permissions are not prohibiting this action. |
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