Hi Dave
I'm AnnaThomas and I'd be happy to help you with your question. In this Forum, we are Microsoft consumers just like yourself.
Sorry for the trouble this might have caused. Please try the following steps
Verify Outlook Search Indexing Options:
Open Outlook 365 and click on File > Options > Search. Click on the "Indexing Options" button and check if the location of your OST file is included in the indexed locations. If not, click on "Modify" and add the location of your OST file to the indexed locations. Restart Outlook and check if the search is working.
Rebuild Outlook Search Index:
Open Outlook 365 and click on File > Options > Search. Click on the "Indexing Options" button and then click on "Advanced". In the "Advanced Options" window, click on "Rebuild" button. Wait for the indexing process to complete (it may take some time if you have a lot of emails). Restart Outlook and check if the search is working.
Repair Office installation:
Open Control Panel > Programs and Features. Find "Microsoft 365" (or "Office 365") in the list and select it. Click on "Change" button and select "Online Repair". Follow the prompts to repair Office installation. Restart Outlook and check if the search is working.
If none of these steps solve the issue, you can also try creating a new Outlook profile and see if that resolves the issue.
I hope this helps ;-), let me know if this is contrary to what you need, I would still be helpful to answer more of your questions.
Best Regards,
AnnaThomas
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