Dear Sir, An Exchange Server appears problem of warning message: English Exchange 2007 with SP2: An error occurred on database "FifthStorageGroup\FifthStore". Function name or description of problem: Restrict/SetSearchCriteria Error: 1162 Warning: fail to apply search optimization to folder (FID 1-580F859C30) Retrying without optimization Warning Event ID: 1025 Source: MSExchangeIS Mailbox Category: General It only occurs in one of the database, any suggestion to fix it. Regards, Joe

You can ignore those, it means that Exchange couldn't perform an optimized indexed search. This usually occurs with users that have high item count per folder > 5000. You can try rebuilding the indexes, though it may alleviate if you have users that have high item counts they will still likley continue. Event 1025, Source MSExchagneIS Mailbox Store, Error 1162 http://theessentialexchange.com/blogs/michael/archive/2008/07/20/event-1025-source-msexchagneis-mailbox-store-error-1162.aspxJames Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

Hi Joe, Any updates? And similar post, please see: Restrict/SetSearchCriteria Error: 1162 Warning: fail to apply search optimization to folder (FID 4-107D2B71 http://social.technet.microsoft.com/Forums/en-GB/exchangesvradmin/thread/1cf19fb0-f400-4243-b225-0271e00665b0 Mailbox Event ID Warning 1025 - Error 1162 http://social.technet.microsoft.com/forums/en-US/exchangesvrgeneral/thread/d546af02-acc6-4d5b-a8d4-8e586d7b7034 Frank Wang TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Dear JamesTechMan, Frank, Thank you for your information. I will keep reference on it. Joe