When you press Ctrl+Shift+F or F3 in Outlook, the Advanced Find window opens, but by default it searches only the current folder. If you need to find an email, contact, or appointment across multiple folders simultaneously, the standard search can feel restrictive. This limitation exists because the Advanced Find dialog is designed to target a single folder or a specific folder tree unless you change the scope manually. This article explains how to modify the search scope so you can run an Advanced Find across your entire mailbox, multiple selected folders, or a folder group at once.
You will learn the exact steps to set the search location in Advanced Find, how to combine folder selection with search criteria, and what to do when the search still returns incomplete results. The method works in Outlook 2016, Outlook 2019, Outlook for Microsoft 365, and Outlook 2021.
Key Takeaways: Searching Multiple Folders with Advanced Find F3
- Advanced Find dialog (Ctrl+Shift+F): The Browse button lets you select one or more folders to search instead of the default current folder.
- Search All Mail Items option: Selecting the top-level mailbox node in the Browse dialog searches every folder in that mailbox at once.
- Subfolders checkbox: Check this box in the Browse dialog to include all subfolders of the selected folder in the search.
How Advanced Find F3 Works and Why It Searches Only One Folder by Default
The Advanced Find feature in Outlook is a legacy search tool that provides more control than the Instant Search bar. When you open it with F3 or Ctrl+Shift+F, the dialog shows a Look field that defaults to the folder you are currently viewing. This behavior is by design: Advanced Find was built to let you narrow results by folder location before applying criteria like sender, date, or keywords.
The root cause of the single-folder limitation is that the Look field accepts only one folder path unless you use the Browse button to select a higher-level container. If you do not change this setting, Outlook searches only the active folder and its subfolders if the Subfolders checkbox is enabled. To search across multiple unrelated folders, you must manually pick each folder in the Browse dialog or choose a parent container that includes all the folders you need.
Steps to Run an Advanced Find Across Multiple Folders
Follow these steps to set the search scope to multiple folders before entering your search criteria.
- Open the Advanced Find dialog
Press Ctrl+Shift+F on your keyboard. Alternatively, click inside the search bar at the top of the Outlook window and press F3. If the Instant Search bar is not visible, press Ctrl+E to show it first. - Click the Browse button
In the Advanced Find window, locate the Look field near the top. To the right of the Look field, click the Browse button. This opens the Select Folder(s) dialog. - Select the folders you want to search
In the Select Folder(s) dialog, you see your mailbox tree. To search all folders in your mailbox, click the top node that matches your email address or the mailbox name. To search specific folders only, hold the Ctrl key and click each folder you want to include. To search a folder and all its subfolders, click the folder once, then check the Search subfolders box at the bottom of the dialog. - Confirm your folder selection
After selecting the folders, click OK. The Look field in the Advanced Find dialog now shows the name of the selected folder or the text Multiple folders selected if you picked more than one. - Enter your search criteria
Use the tabs in the Advanced Find dialog to define your search. The Messages tab lets you search by sender, recipient, subject, and keywords. The More Choices tab adds filters like categories, attachments, and importance. The Advanced tab allows you to build custom field filters. - Start the search
Click the Find Now button at the bottom right of the dialog. Outlook searches all selected folders and displays matching items in the results list at the bottom of the window.
Searching Across Multiple Mailboxes or PST Files
If you have multiple mailboxes or Personal Folders (.pst) files added to your Outlook profile, you can search across them in one Advanced Find session. In the Select Folder(s) dialog, expand each data file node and select the folders you want from each. Hold Ctrl to select folders from different data files simultaneously. The search results will include items from all selected folders regardless of which mailbox or PST file they belong to.
If Advanced Find Still Shows Incomplete or No Results
Even after setting the correct folder scope, Advanced Find might miss items. The following issues are the most common causes and their fixes.
Advanced Find Does Not Search Folders That Are Syncing
Outlook searches only items that are fully downloaded to your local cache. If you use Cached Exchange Mode and a folder is still syncing, Advanced Find may not return items in that folder. Wait for the sync to complete or switch to Online Mode temporarily. To check sync status, look at the bottom of the Outlook window for the phrase Updating… or a sync progress indicator.
Advanced Find Ignores Folders That Are Hidden or Excluded from Search
Some folders, such as the Deleted Items folder or certain public folders, may be excluded from search by default. In the Select Folder(s) dialog, make sure you explicitly select those folders. Also verify that the folder is not hidden. Right-click the folder in the folder pane, select Properties, and on the General tab ensure the box labeled Hide this folder is unchecked.
Advanced Find Returns Duplicate Results When Searching Multiple Folders
If the same item exists in more than one folder, for example because of rules that copy messages, Advanced Find will show each copy as a separate result. This is normal behavior. To reduce duplicates, narrow your criteria. For instance, add a date range or a specific sender to limit the result set.
Advanced Find vs Instant Search: Key Differences for Multi-Folder Searches
| Item | Advanced Find (Ctrl+Shift+F) | Instant Search (Ctrl+E) |
|---|---|---|
| Search scope setup | Manual folder selection via Browse button | Automatic: Current folder, subfolders, or current mailbox |
| Multiple unrelated folders | Supported by holding Ctrl while selecting folders | Not supported; search is limited to one folder tree |
| Search across data files | Supported by selecting folders from different PST or mailbox nodes | Limited to the currently selected data file |
| Search criteria complexity | Full criteria builder with multiple tabs and custom fields | Keyword-based with basic filters (sender, date, attachments) |
| Performance on large mailboxes | Slower because it scans every selected folder | Faster because it uses the Windows Search index |
Advanced Find is the better tool when you need to search across folders that are not in the same parent tree, when you need complex filters like custom fields, or when you want to combine items from multiple PST files. Instant Search is faster for everyday searches within a single folder or mailbox.
You can now use the Browse button in the Advanced Find dialog to select multiple folders, entire mailboxes, or folders from different data files before running your search. After setting the scope, apply filters on the Messages, More Choices, and Advanced tabs to refine your results. As a next step, try saving your search criteria as a Search Folder so you can reuse the same multi-folder search without reopening Advanced Find each time. To create a Search Folder, go to Folder > New Search Folder, then choose criteria that match your Advanced Find settings.