- Outlook repeatedly prompts you for your mailbox password and you have confirmed that your password is correct.
- You get an error telling you that your mailbox has been temporarily moved on Microsoft Exchange Server.
- You get an error telling you that 'The name could not be matched to a name in the address list'.
- You are prompted for the credentials of another mailbox.
- Messages you send from your mailbox appear to recipients to be from an @outlook.com mailbox.
*These issues may also be present in Outlook 2019
Here are three ways to work around the error
Method 1: Edit the registry
Note: Incorrectly performed Registry edits can cause Windows to crash. We strongly recommend that you perform a backup of your registry before making any changes. Click here to learn how.
1. Open regedit:
- select the Start Menu
- type regedit in either the Run box or in the Search box
- press Enter
2. (HIGHLY RECOMMENDED BUT OPTIONAL) Backup your registry. Click here to learn how.
3. In the registry, navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover
4. Right-click anywhere in the right-hand column and choose NEW and then DWORD (32-bit) Value.
5. Name the entry: ExcludeExplicitO365EndPoint
6. Right-click on your new entry and select MODIFY.
7. Entry the number 1 in the Value data box, and select OK.
8. Restart your computer.
9. Recreate your Outlook profile.
10. Open Outlook and enter your email address and password when prompted.
Method 2: Update the mailbox in Credential Manager and re-build the Autodiscover.xml file
1. Navigate to your Windows Control Panel > Credential Manager > Windows Credentials
2. Select any record(s) associated with your Exchange mailbox.
3. Click Remove just below the entry.
4. Enter %LocalAppData% in the Windows search bar and navigate to Microsoft > Outlook.
5. Delete the file(s) that ends in Autodiscover.xml. (Ex: 6b8cf067fad71d4b8b28c4f07b8b56f5 - Autodiscover.xml)
Note: Alternatively, you can rename the file(s) instead of deleting them.
6. Restart Outlook
Method 3: Revert to an earlier version of Office 2016
Follow this Microsoft guide to learn how to revert to an earlier version of Outlook.(https://support.microsoft.com/en-us/help/2770432/how-to-revert-to-an-earlier-version-of-office-2013-or-office-2016-clic)
