You open Outlook to compose a message, only to have the software finish your sentences before you can. If you have ever typed a name in the To field and watched Outlook suggest contacts you did not want, you know exactly why you need to learn how to turn off autocomplete in outlook. This feature, officially called Auto-Complete, can be helpful sometimes, but it can also cause embarrassing mistakes when you accidentally send an email to the wrong person.
Turning off this feature is simple, and it takes just a few clicks. In this guide, we will walk you through every method for disabling autocomplete in Outlook, whether you use the desktop version, the web app, or a Mac. We will also cover how to clear the autocomplete cache and fix common issues. By the end, you will have full control over your email addresses.
What Is Autocomplete In Outlook?
Autocomplete in Outlook is a feature that predicts names and email addresses as you type in the To, Cc, or Bcc fields. It pulls suggestions from your sent emails and your contact list. The goal is to save you time, but it can be a privacy risk or cause accidental sends.
For example, if you have two contacts with similar names, Outlook might fill in the wrong one. Or, if you share a computer, your autocomplete list might show personal contacts to coworkers. That is why many people want to know how to turn off autocomplete in outlook completely.
How To Turn Off Autocomplete In Outlook Desktop (Windows)
The most common version of Outlook is the desktop app for Windows. Here is the step-by-step method to disable autocomplete.
Step 1: Open Outlook And Go To File
Launch Outlook on your Windows computer. Click on the File tab in the top-left corner of the window. This opens the backstage view where you can manage account settings and options.
Step 2: Access Options
In the File menu, you will see a list of commands on the left side. Click on Options near the bottom. A new window called Outlook Options will open.
Step 3: Navigate To Mail Settings
In the Outlook Options window, look for the Mail tab on the left sidebar. Click on it. This section contains settings for composing messages, including autocomplete.
Step 4: Find The Send Messages Section
Scroll down in the Mail settings until you see a section labeled Send messages. This is where the autocomplete toggle lives.
Step 5: Disable Autocomplete
Look for the checkbox that says Use Auto-Complete List to suggest names when typing in the To, Cc, and Bcc lines. Uncheck this box. Then, click OK at the bottom to save your changes.
That is it. Autocomplete is now turned off. You can test it by composing a new email and typing a name in the To field. No suggestions should appear.
How To Clear The Autocomplete Cache In Outlook Desktop
Even after you disable autocomplete, Outlook may still remember old suggestions. To remove them completely, you need to clear the autocomplete cache. Here is how.
Method 1: Clear From The Options Menu
Go back to File > Options > Mail. In the Send messages section, you will see a button labeled Empty Auto-Complete List. Click it. A confirmation pop-up will appear. Click Yes to delete all cached suggestions.
Method 2: Delete Individual Entries
If you only want to remove specific contacts, you can do that without clearing the whole list. Start typing a name in the To field. When the suggestion appears, use the up or down arrow key to highlight it. Then press the Delete key on your keyboard. That entry will be removed.
This method works even if autocomplete is still enabled. It is handy for cleaning up one or two incorrect addresses.
How To Turn Off Autocomplete In Outlook For Mac
Outlook for Mac has a slightly different interface. The steps are still straightforward.
Step 1: Open Outlook For Mac
Launch the Outlook application on your Mac. Make sure you are on the main screen.
Step 2: Go To Preferences
Click on Outlook in the top menu bar. Then select Preferences from the dropdown menu. A preferences window will open.
Step 3: Select Autocomplete
In the preferences window, look for the Autocomplete icon. It looks like a small address book with a pencil. Click on it.
Step 4: Disable The Feature
You will see a checkbox that says Suggest names while typing in the To, Cc, and Bcc fields. Uncheck this box. Close the preferences window. The changes save automatically.
To clear the cache on Mac, click the Clear Auto-Complete List button in the same window. Confirm the action.
How To Turn Off Autocomplete In Outlook On The Web
Outlook on the web (OWA) is used by many people for work or school. The process is different from the desktop app.
Step 1: Log Into Outlook Web
Open your browser and go to outlook.com or your organization’s webmail portal. Sign in with your credentials.
Step 2: Open Settings
Click on the gear icon in the top-right corner. A settings pane will slide out. At the bottom of the pane, click View all Outlook settings.
Step 3: Go To Mail Settings
In the settings window, click on Mail on the left side. Then select Compose and reply from the submenu.
Step 4: Turn Off Autocomplete
Scroll down to the Autocomplete section. You will see a toggle switch for Use autocomplete to suggest names when typing in the To, Cc, and Bcc lines. Set the toggle to Off.
To clear the list on the web, click the Clear autocomplete history link below the toggle. Confirm the deletion.
How To Turn Off Autocomplete In Outlook Mobile App
The Outlook mobile app for iOS and Android also has autocomplete. Here is how to disable it.
For IOS (IPhone/iPad)
Open the Outlook app. Tap your profile picture in the top-left corner. Tap the gear icon to open settings. Scroll down to Mail and tap it. Look for Autocomplete and toggle it off.
For Android
Open the Outlook app. Tap the three horizontal lines (hamburger menu) in the top-left. Tap the gear icon. Tap Mail. Find the Autocomplete option and toggle it off.
Note: The mobile app does not have a built-in way to clear the autocomplete cache. You may need to uninstall and reinstall the app to remove old suggestions.
Common Issues And Fixes When Turning Off Autocomplete
Sometimes, even after you follow the steps, autocomplete still appears. Here are common problems and solutions.
Issue 1: Autocomplete Still Works After Disabling
This usually happens if you have multiple Outlook profiles or accounts. Make sure you disabled autocomplete for the correct profile. Also, restart Outlook after making changes. If you use Exchange or Office 365, the setting might sync from another device. Check all your devices.
Issue 2: The Option Is Grayed Out
If the autocomplete checkbox is grayed out, it might be controlled by your IT administrator. This is common in corporate environments. You cannot change it yourself. Contact your IT support team and ask them to disable it for you.
Issue 3: Cache Is Not Clearing
If you click “Empty Auto-Complete List” but suggestions still appear, try closing and reopening Outlook. If that does not work, you can manually delete the cache file. On Windows, the file is located at: %appdata%\Microsoft\Outlook\Profiles\Outlook\. Look for a file named AutoComplete or NK2 (for older versions). Delete it while Outlook is closed. Be careful not to delete other files.
Why You Might Want To Keep Autocomplete On
Before you turn off autocomplete forever, consider the benefits. For many users, it speeds up email composition significantly. If you send emails to the same people daily, autocomplete saves you from typing full addresses each time. It also reduces typos in email addresses.
If privacy is your main concern, you can clear the list regularly instead of disabling the feature. Or, you can delete individual entries as needed. That way, you keep the convenience without the risk of old or incorrect suggestions.
How To Turn Off Autocomplete In Outlook For Specific Accounts
If you have multiple email accounts set up in Outlook, you might want to disable autocomplete for only one account. Unfortunately, Outlook does not offer a per-account setting. The autocomplete setting applies to all accounts in the profile. The only workaround is to create separate Outlook profiles for each account. Then, disable autocomplete in the profile you want to restrict.
Creating A New Outlook Profile
Go to Control Panel > Mail > Show Profiles. Click Add and name the new profile. Set up your email account in it. When you launch Outlook, it will ask which profile to use. Choose the one with autocomplete disabled.
This is a bit advanced, but it works if you need strict control.
Frequently Asked Questions (FAQ)
1. How do I turn off autocomplete in Outlook 365?
The steps are the same as for Outlook desktop. Go to File > Options > Mail and uncheck the autocomplete box. Outlook 365 is just the subscription version, so the settings are identical.
2. Will turning off autocomplete delete my contacts?
No. Disabling autocomplete only stops Outlook from suggesting names as you type. Your contacts list remains untouched. You can still manually type email addresses or pick them from your address book.
3. Can I turn off autocomplete for only the To field?
No, Outlook does not allow per-field settings. The option disables autocomplete for To, Cc, and Bcc fields all at once.
4. Why does autocomplete keep coming back after I turn it off?
This can happen if you have multiple devices synced with the same account. For example, if you disable it on your desktop but it is still enabled on your phone, the setting might sync back. Check all your devices and turn it off everywhere.
5. Is there a way to disable autocomplete temporarily?
There is no built-in toggle for temporary disable. However, you can quickly clear the cache before composing a sensitive email. Or, you can use the keyboard shortcut: start typing a name, then press Esc to dismiss the suggestion. This works for a single instance.
Final Thoughts On Autocomplete In Outlook
Knowing how to turn off autocomplete in outlook gives you more control over your email workflow. Whether you want to avoid accidental sends, protect your privacy, or simply prefer to type addresses manually, the process is quick and reversible. You can always turn it back on if you miss the convenience.
Remember to clear the cache after disabling the feature to remove old suggestions. And if you run into issues, check your IT policies or try the manual cache deletion method. With these steps, you can customize Outlook to fit your needs perfectly.
Now you can compose emails without Outlook finishing your sentences. No more awkward suggestions or wrong addresses. Just clean, manual control over every recipient you add.