Outlook search can remember what you type—so old searches show up as suggestions and prior queries may appear in recent search experiences. That can be annoying, especially on shared devices or when you’re trying to keep results clean.
This guide walks you through removing Outlook search history across Outlook on the web, Outlook for Windows, Outlook for Mac, and Outlook mobile. Follow the section that matches your setup and clear the relevant history without breaking your mail accounts.
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If you don’t see an option to “clear search history,” don’t assume it’s impossible—many cases are tied to Microsoft 365 search suggestions, cached app data, or browser autocomplete.
What Outlook Search History Actually Is
In most Microsoft 365 setups, “Outlook search history” you notice is usually one (or a mix) of these:
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- Search suggestions and recent queries (often stored in your Microsoft account experience and surfaced in the search box).
- Cached local data in the Outlook app (especially if results are stored for speed).
- Browser autocomplete if you’re using Outlook in a browser (Chrome, Edge, Safari, etc.).
So the fix depends on where you’re searching: web vs desktop vs mobile—and sometimes which app generation you’re using.
Before You Start (Prerequisites and What Will Change)
Before clearing anything, confirm these basics:
- You’re signed into the same Microsoft account on the device you’re trying to clean.
- You understand that clearing suggestions affects the search experience (recent terms and suggestions may no longer appear).
- If you’re on a shared computer, you may also want to clear browser autocomplete and sign out afterward.
Important: Clearing local cache usually fixes repeated old searches. Clearing browser autocomplete fixes old terms typed into the browser’s search/address fields (which can look like Outlook history).
Delete Search History in Outlook on the Web
If you use Outlook in a browser (Outlook on the web at outlook.office.com), you’ll generally want to clear the search suggestion/recent experience and browser autocomplete.
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1) Open Outlook in your browser and sign in.
2) In the search bar (top area), click into the search box.
3) Look for a Clear / Remove / Delete control next to the recent items or suggestions. If you see it, remove recent searches one by one or clear the list.
The exact wording changes over time because Microsoft A/B tests UI labels. If you don’t see a clear option next to suggestions, use the browser method in the next section (“Browser Autocomplete vs Outlook Search Suggestions”) and then continue with cached-data workarounds below.
Clear browser autocomplete (usually the “real” culprit)
When the suggestion list is tied to the browser, Outlook may look like it kept your history even after app-level changes.
Use your browser’s autocomplete controls (Chrome/Edge recommended paths are covered in the troubleshooting section) and remove entries that include your old search terms.
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Classic Outlook (the traditional desktop client) doesn’t always expose a single “Clear search history” button, but you can remove the stored autocomplete items and reset search-related caches.
Clear recent searches using the search box (when available)
1) Open Outlook (classic).
2) Click the Search box in the top area.
3) Check whether recent searches appear with a small Clear or X icon near the suggestions. Remove the items you don’t want.
If you only see a list without delete controls, proceed to the cache reset approach below.
Reset search index and rebuild local search (fixes stubborn history)
For many Windows setups, rebuilding search helps when old results or queries keep resurfacing.
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- Close Outlook.
- Open the Windows Control Panel (or search for Indexing Options in the Start menu).
- Select Microsoft Outlook (or the indexing entry that includes Outlook).
- Click Advanced.
- Under Troubleshooting, choose Rebuild (or Rebuild index).
- Restart Outlook and wait for indexing to complete.
Gotcha: Rebuilding can take time and may temporarily slow search until the index finishes updating.
Delete Search History in Outlook for Windows (New Outlook)
New Outlook (the modern client) behaves differently from classic. If you’re using the newer UI, the quickest approach is to clear Outlook’s local data and ensure your browser/autocomplete isn’t reintroducing terms.
Clear Outlook cache/data and re-sign in (most effective)
1) Close New Outlook.
2) Open Settings in Windows and go to Apps > Installed apps.
3) Find Outlook (new Outlook) and use Advanced options.
4) Choose Reset (if available) to clear local data.
Then restart Outlook and sign back in to repopulate fresh local state.
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Delete Search History in Outlook for Mac
On macOS, search history behavior is often tied to local indexing and the macOS/Outlook cached state.
Clear recent search suggestions (if visible)
1) Open Outlook for Mac.
2) Click the Search field.
3) If you see a list of recent searches, look for Remove or Clear options and delete entries you don’t want.
If there’s no deletion UI, use the indexing reset approach.
Rebuild Outlook search index
1) Quit Outlook completely.
2) Open Spotlight or System Settings (depending on your macOS version) and go to search/index settings if available, then remove Outlook-related indexing entries.
3) Reopen Outlook and allow it to rebuild indexing.
Gotcha: macOS search settings vary by macOS version. If you can’t find direct index controls, reinstall/rebuild via Outlook’s internal indexing (or clear local app cache by resetting the app) is often the practical route.
Delete Search History in Outlook Mobile (iPhone and Android)
On iPhone and Android, you’ll usually clear recent searches by clearing the app’s cached data (and removing suggestions in the keyboard/search UI where applicable).
iPhone (Outlook app)
- Open Settings on your iPhone.
- Go to General > iPhone Storage.
- Select Outlook.
- Tap Offload App (keeps documents) or Delete App (removes all app data).
- Reinstall Outlook from the App Store and sign in again.
Offloading is a gentler reset; deleting gives the cleanest state.
Android (Outlook app)
- Open Settings on your Android device.
- Go to Apps (or App management).
- Find and tap Outlook.
- Tap Storage.
- Choose Clear cache. If needed, choose Clear data (this signs you out and removes local settings).
After clearing data, sign in again and let Outlook re-index.
If Searches Keep Reappearing: Common Causes and Fixes
If you delete history but old searches return, you’re dealing with one of these common issues.
1) Browser autocomplete is repopulating terms
If you’re searching in Outlook on the web, browser autocomplete may show your previous queries even after you remove suggestions in the Outlook UI.
Fix by clearing site data/autocomplete entries for outlook.office.com in your browser (Chrome and Edge methods are below).
2) Outlook search suggestions are account-scoped
Some suggestion behavior syncs at the account level. Clearing on one device doesn’t always clear everywhere instantly (latency can be hours). If you need immediate cleanup, clear local app cache and browser autocomplete on the affected device.
3) Local search index needs rebuild
If your queries keep producing “old” results, a stale index is likely. Rebuilding the Outlook index (Windows classic) is the most direct fix.
4) Cached credentials or sign-in mismatch
Make sure you’re signed into the correct Microsoft account. If you have multiple accounts configured, you might be clearing history for one account while searching on another.
Browser Autocomplete vs Outlook Search Suggestions
This is where many people get stuck. Outlook search suggestions can be confused with browser form/autocomplete suggestions.
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Chrome (Windows/macOS)
- Open Chrome and go to Settings.
- Select Privacy and security > Autofill and passwords.
- Choose Manage autofill settings > Payments and addresses (optional) and then Addresses and more (optional depending on your needs).
- For search terms, the most reliable is clearing Browsing data: go to Privacy and security > Clear browsing data.
- Select Cached images and files and Cookies and other site data. You can also narrow to outlook.office.com via site data controls.
If you only want to remove Outlook-specific autocomplete, clear site data for outlook.office.com instead of wiping all browsing data.
Microsoft Edge (Windows/macOS)
- Open Edge > Settings.
- Go to Privacy, search, and services.
- Under Clear browsing data, click Choose what to clear.
- Check Cookies and other site data and Cached images and files.
- Set Time range to All time for a full cleanup, or Last 24 hours if you want a lighter reset.
Safari (macOS)
- Open Safari > Settings (or Preferences).
- Go to Privacy.
- Choose Manage Website Data and search for outlook.office.com.
- Select it and remove it.
That targets Outlook’s site storage without clearing the entire browser history.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What You Can and Can’t Fully Remove
Depending on your organization and Microsoft 365 policies, some visibility may be unavoidable.
- You can often remove local suggestions, cached data, browser autocomplete entries, and stale index results.
- You may not be able to remove every server-side “recent search” artifact if your tenant/app experience provides only suggestion management—not a full deletion button.
- Organization policies can control what search history is stored or whether it appears at all.
If you’re in a company environment and you need guaranteed removal, ask your Microsoft 365 administrator about tenant search history and retention policies.
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Quick Checklist
Use this as a fast path when you’re in a hurry.
| Where you search | Best first action | Backup if it doesn’t work |
|---|---|---|
| Outlook on the web | Remove suggestions in the search UI (if the clear/remove control exists) | Clear browser cookies/site data for outlook.office.com and rebuild form/autocomplete |
| Outlook for Windows (classic) | Delete recent searches from the search box (when supported) | Rebuild Outlook search index via Indexing Options > Advanced > Rebuild |
| New Outlook for Windows | Reset the Outlook app’s local data (Windows Apps > Outlook > Advanced options) | Check browser autocomplete if you also search in a browser |
| Outlook for Mac | Remove recent suggestions in the search field (if delete UI exists) | Reset/rebuild indexing or reinstall to clear local cache |
| Outlook mobile (iPhone/Android) | Clear app cache/data (Android) or offload/delete app (iPhone) | Reinstall and re-sign in |
FAQs
Can I delete Outlook search history globally for my account?
Sometimes. The closest practical methods are clearing search suggestions in the app and removing account-linked suggestions over time. If you need a guaranteed, account-wide removal, it depends on your tenant policies and what Microsoft exposes in your UI.
Why do old searches keep showing up after I cleared them?
Most often it’s one of these: browser autocomplete is repopulating terms, the local Outlook search index is stale, you cleared suggestions on one account but you’re searching on another, or the UI hasn’t refreshed yet.
Will deleting search history delete my emails?
No. Clearing search suggestions, browser autocomplete, and local cache generally affects the search experience only. Rebuilding indexes can take time, but it shouldn’t delete mail items.
Does the “Clear” option appear for everyone in Outlook on the web?
No. Microsoft’s UI for suggestions and clearing controls can vary by tenant, rollout ring, and A/B tests. When the control isn’t visible, clearing browser autocomplete/site data and resetting local app cache is the reliable alternative.
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That usually means Outlook is showing suggestions rather than a fully logged history list. Clear what you can in the search UI, then remove browser autocomplete and rebuild search indexing if the suggestions persist.
Bottom Line
To delete Outlook search history and remove searches, start with the method that matches where you’re searching: remove suggestions in Outlook on the web or the search UI when available, clear browser autocomplete/site data, and rebuild Outlook’s search index or reset local app cache when history keeps coming back.
If you tell me which Outlook version you’re using (classic vs new), plus your device (Windows/macOS/iPhone/Android) and whether you’re searching in a browser or the desktop app, I can give you the shortest exact path for your setup.
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