We are dealing with a weird issue that started after a routine maintenance window this past week.  We took our Exchange 2010 server down while we performed maintenance on our SANs.  After bring the servers back up we have developed an issue in Outlook with searching.  When a user searches for emails only those that are before the outage are returned in the resultant set even if an email from after the outage matches the search.  However, if you search from OWA all the expected results are returned.  Please remember that we are in Online mode with Outlook and not cached mode.

I can say that I have checked Exchange and it appears that all indexes are fine and the fact that OWA returns the correct result would prove that.

One other thing to note.  If you do an Advanced Find in Outlook and select frequently-used text fields it give weird search results, but it will include the emails from this week.

What am I missing?  I can't think of anything else to look for.

Hi,

Based on my knowledge, when Outlook is in Online Mode, the search is based on the Exchange Search Service. Although the search works on OWA, I still suggest you try re-indexing on Exchange Server to check the result.

Moreover, there are some steps we can perform to narrow down this issue:

1. Switch to Cached Exchange Mode, then the Index is based on the local computer, check if then the issue persists. If the issue persists, we can say it's not about the index, maybe something else stops Outlook from searching properly, such as an add-in. Also, it can be a workaround if it works in Cached Mode.

2. Create a new Outlook Profile to setup the account, check if the problem persists. Please do not remove the previous profile as this is just a test, I want to know if the problem persists with a new profile.

Please feel free to post back with more details.

Melon Chen

Forum Support