How to fix Microsoft Outlook autocomplete feature not working or populating issue

 The Autocomplete feature in Microsoft Outlook 365 allows you to automatically complete and fill out your contact list. If you need to send an email to someone with a long email address or an uncommon username, it may make it easier to type it. Because typing the whole email address of your recipient every time you send many emails can be pretty taxing. When you gradually input the letters, the Autocomplete or autofill tool will propose and populate email addresses from your contact list.

However, many users report that the Auto-complete tool does not perform effectively, even though it is a useful feature. The function does not add them to the recipient's list. We've got you covered if you're having the same problem. In this article, we will discuss various solutions that you should be able to use to resolve the issue.

WHAT SERVICE DOES THE MICROSOFT OUTLOOK AUTOCOMPLETE FEATURE PROVIDE?

• In Outlook, autocomplete is a useful function that offers email addresses as soon as you write the initials. And this will undoubtedly make life easier for all Outlook users who have come across someone with a long email address or username to whom they need to send messages.

WHAT CAUSES THE ISSUE WITH THE OUTLOOK AUTOCOMPLETE FEATURE?

• Many users have reported that autocomplete in Outlook isn't working properly. This could be caused by a faulty Autocomplete cache, an add-in, or some other.

HOW TO FIX MICROSOFT OUTLOOK AUTOCOMPLETE FEATURE NOT WORKING OR POPULATING RECIPIENT'S ISSUE

•  By following the solutions below, you can try to fix the Autocomplete not working or messing up the issue in Outlook.

Solution #1: Make sure your Outlook Autocomplete feature is turned on.

• Navigate to the File menu in Outlook.
• Choose your options.
• Go to the Mail section.
• Go to Send Messages
• When entering in the To, Cc, and Bcc lines, look for the Use Auto-Complete List to propose names option. Check to see if the box is checked. Otherwise, mark the box. If you answered yes, uncheck the box and re-tick it.
• Click OK.
• Restart your Outlook application.

Solution #2: Disable Outlook Add-ins

• In Outlook, go to the File menu.
• Select Options.
• Choose Add-ons.
• Go to Manage at the bottom and pick COM Add-ins from the drop-down menu.
• Select the Go option.
• Remove the check marks next to the add-ins.
• Click OK.

Solution #3: Rename the RoamCache folder.

• Navigate to the File menu in Outlook if you're using a Microsoft Exchange account.
• Go to Information.
• Select Account Settings.
• Select your Microsoft Exchange account from the drop-down menu.
• Choose the Change option.
• Select the Advanced option.
• Look for and disable the Use Cached Exchange Mode option.
• Click OK.
• Exit Outlook.
• Launch the Run dialog box.
• Enter the following: % LOCALAPPDATA % MicrosoftOutlook
• Locate and right-click the RoamCache.
• Choose Rename and type in RoamCache.
• Restart your Outlook application.
• Select your Microsoft Exchange account in Account Settings once more.
• Click Change.
• Check the box next to Use Cached Exchange Mode on the Advanced tab.
• Click Apply.
• Click OK.

Solution #4: Open Outlook in Protected Mode.

• Open the Run Dialog Box.
• Enter the following: outlook.exe /safe.
• Now see if the Autocomplete feature works properly.

Solution #5: Make an Outlook update

• Select File from the File menu.
• Navigate to Account.
• Select Update Options.
• Now click Update.
• Restart your Outlook application.

Solution #6: Create a new profile

• Whether none of the other options work, consider establishing a new Outlook profile and seeing if the Autocomplete feature works again. This also fixes bugs in Outlook in general.