Forum Discussion
herylupi
Nov 25, 2025Copper Contributor
Microsoft Outlook (classic) search suddenly not working
Hi, many users in my company experienced same issue today, when trying to search anything/any word but get no results and same symptom (We're having trouble fetching results from the server). The app...
Nov 28, 2025
hi herylupi Pl check below workarounds options one after one.
- Disable Server-Assisted Search (temporary workaround)
- File → Options → Search
- Uncheck “Improve search speed by limiting the number of results shown”
- Restart Outlook
- Try web / New Outlook
- Use Outlook Web (OWA) or New Outlook – search usually works there
- Check M365 Service Health
- Look for issues under:
- Exchange Online
- Microsoft 365 Search
- Rebuild Index (if needed)
- Control Panel → Indexing Options → Advanced → Rebuild
- Switch Outlook to use Windows Index (Registry)
HKCU\Software\Microsoft\Office\16.0\Outlook\Search
DWORD: DisableServerAssistedSearch = 1