When you search for emails in the new Outlook for Windows, the results often display items from only the currently selected folder. This happens because the new Outlook defaults to a folder-scoped search rather than searching all mailboxes. The cause is a missing automatic switch to the All Mailboxes scope when using the global search box. This article explains the root cause and provides the exact steps to force a full search across all folders and mailboxes.
Key Takeaways: Force Full Mailbox Search in New Outlook
- Search scope dropdown in the search bar: Change from “Current Folder” to “All Mailboxes” to expand results across all folders and accounts.
- Ctrl+E keyboard shortcut: Opens the search box and automatically sets the scope to All Mailboxes in new Outlook.
- Search Refiners pane on the right: Use the “Scope” refiner after a search to switch between Current Folder, Current Mailbox, and All Mailboxes.
Why New Outlook Search Defaults to the Current Folder
The new Outlook for Windows is built on a web-based platform that uses a different search architecture than the classic Outlook client. One key difference is how the search scope is managed. In classic Outlook, the global search box automatically searches all folders and mailboxes unless you manually restrict the scope. In the new Outlook, the search box respects the last-used scope setting. If you recently searched only within a specific folder, the next search will also be limited to that folder.
The search scope appears as a small label below the search box, such as “Current Folder” or “Current Mailbox.” When this label shows “Current Folder,” the search engine only scans the folder you are currently viewing. This behavior is by design but often confuses users who expect a global search by default. Microsoft has not yet added a persistent setting to always default to All Mailboxes, so you must manually adjust the scope each time or use a keyboard shortcut.
The Role of Search Indexing in New Outlook
New Outlook uses Microsoft Graph and server-side search indexing rather than the local Windows Search index used by classic Outlook. This means that rebuilding the Windows Search index does not affect search results in new Outlook. The scope limitation is purely a UI setting, not a data issue. If search returns zero results when you expect many, check the scope label first.
Steps to Change Search Scope to All Mailboxes
Use one of these three methods to expand your search results from the current folder to all mailboxes. Each method works in the latest version of new Outlook for Windows (version 1.2023 or later).
Method 1: Use the Search Box Dropdown
- Click inside the search box at the top of the Outlook window
The search box is located above the folder pane. Once clicked, the Search tab appears on the ribbon. - Look for the scope label below the search box
You will see a small text label such as “Current Folder” or “Current Mailbox.” Click this label to open a dropdown menu. - Select All Mailboxes from the dropdown
The dropdown offers three options: Current Folder, Current Mailbox, and All Mailboxes. Choose All Mailboxes to search every folder in every connected account. - Type your search query and press Enter
The search will now scan all folders and mailboxes. Results will include items from your inbox, sent items, archives, and any other folders.
Method 2: Use the Ctrl+E Shortcut
- Press Ctrl+E on your keyboard
This shortcut opens the search box and automatically sets the search scope to All Mailboxes. It works regardless of the previous scope setting. - Type your search term and press Enter
The search will return results from all folders and mailboxes. Use this shortcut whenever you need a global search.
Method 3: Use the Search Refiners Pane
- Perform any search first
Type a word in the search box and press Enter. The results appear in the main pane, and the Search Refiners pane opens on the right side of the window. - Locate the Scope section in the refiners pane
Scroll down in the refiners pane until you see the Scope heading. It lists Current Folder, Current Mailbox, and All Mailboxes as clickable options. - Click All Mailboxes
The search results update immediately to include items from all folders and mailboxes.
If Search Still Shows Only the Current Folder After the Fix
The search scope resets to Current Folder after closing Outlook
New Outlook does not save the search scope setting between sessions. Each time you restart Outlook, the scope defaults to Current Folder. You must change the scope again using one of the methods above. As of this writing, no registry key or group policy exists to force a persistent All Mailboxes default in new Outlook.
Search returns zero results when All Mailboxes is selected
If you select All Mailboxes but still see no results, the issue is not the scope but the search query or connectivity. Check your internet connection because new Outlook requires an active connection to Microsoft 365 servers. Also verify that the search term is spelled correctly. If you are searching for an attachment name, ensure you include the file extension or use the hasattachment:yes syntax.
Only one mailbox appears in the All Mailboxes results
If you have multiple accounts added to new Outlook, but search shows results from only one account, ensure all accounts are fully synced. Go to File > Account Settings > Account Settings and verify that each account status shows “Connected.” If an account shows an error, remove and re-add it. After re-adding, wait for the initial sync to complete before searching.
Search Scope Options in New Outlook vs Classic Outlook
| Item | New Outlook for Windows | Classic Outlook |
|---|---|---|
| Default search scope | Current Folder | All Mailboxes |
| Method to change scope | Click scope label below search box or use Ctrl+E | Click the search box and select All Mailboxes from the dropdown |
| Scope persists between sessions | No, resets to Current Folder | Yes, remembers last selection |
| Search index type | Server-side (Microsoft Graph) | Local Windows Search index |
| Keyboard shortcut for global search | Ctrl+E sets scope to All Mailboxes | Ctrl+E opens search, scope depends on previous setting |
Now you can reliably search across all folders and mailboxes in new Outlook. Start using the Ctrl+E shortcut to bypass the Current Folder scope each time you open the app. For deeper search filtering, combine the All Mailboxes scope with search operators such as from: or subject: to narrow results. If you switch between classic Outlook and new Outlook, remember that the search scope behavior is different in each client.