There still seems to be a bug in Windows 11 while searching in Outlook Desktop. You might not see the most recent emails in the search results. According to Microsoft, there is a workaround for this problem. It’s a temporary fix.
You can temporarily work around the problem by disabling Windows Desktop Search. This will cause Outlook to use its built-in search. The built-in search will display the following message to indicate it is not using the Windows Search service: “Search performance will be impacted because a group policy has turned off the Windows Search service.”
Open up your Reg Editor as Administrator
Search for: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows
Select Edit > New > Key and name the new key Windows Search.
- Select the new Windows Search key.
- Select Edit > New > DWORD Value.
- Type PreventIndexingOutlook for the name of the DWORD, and then press Enter.
- Right-click PreventIndexingOutlook, and then select Modify….
- In the Value data box, type 1 to enable the registry entry, and then select OK.
Note: To disable the PreventIndexingOutlook setting, type 0 (zero), and then select OK.
- Exit Registry Editor, and then restart Outlook.
For reference, this is how it will appear in Registry Editor when the workaround is enabled:
Microsoft is currently working on a solution. We will update the status of this article once a release date for the fix is known.