Answered here: [https://answers.microsoft.com/en-us/outlook_com/forum/all/fast-search-doesnt-work-with-certain-search-terms/023cd70b-db6a-4d46-882c-d5b630ff9277
FAST Search doesn't work with certain search terms (on-premise Exchange 2019 CU11)
I'm seeing a curious problem with FAST search in Outlook (2019 and 2016) with an on-premise 2019 Exchange server (CU11):
A user was searching for an E-Mail by someone named Carmen and received the error: "We're having trouble fetching results from the server... > Let's look on your computer instead"
FAST Search generally works though, only variations of this search term result in the above error message. The user tested a bit, these are the results:
- ca – worked
- car - worked
- carm – didn't work
- carme – didn't work
- carmen – didn't work
- carmen. – didn't work
- carmen.g – didn't work
- carmen.gy – worked
- carmen.gyo - worked
When the user searches via OWA, it all works fine. When I search for the same word in my Outlook, it also works fine (although I obviously don't have the same e-mails in my mailbox).
Has anyone else encountered this?
2 answers
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Yuki Sun-MSFT 41,051 Reputation points Microsoft Vendor
2023-01-12T02:37:49.4766667+00:00 Hi @admin888,
Glad to see that your issue had already been resolved in the Answers community and thanks for sharing the solution so that others experiencing the same thing can easily reference this! Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others", I'll repost your solution in case you'd like to "Accept" the answer.
[FAST Search doesn't work with certain search terms (on-premise Exchange 2019 CU11)]
Issue Symptom:
Outlook (2019 and 2016) with an on-premise 2019 Exchange server (CU11)
A user was searching for an E-Mail by someone named Carmen and received the error: *"We're having trouble fetching results from the server... > Let's look on your computer instead"
No issue in OWA. Only affects the particular user.Resolution:
Selecting "All Outlook items" instead of "Current Mailbox" fixes the problem.
Original thread link: FAST Search doesn't work with certain search terms (on-premise Exchange 2019)