Description
This article will cover a few fixes for anyone using Outlook 2016 on Windows who is constantly being asked to enter their password.
Requirements
Outlook 2016
Windows 7 and above
The Process
Please try the below 3 fixes to resolve the issue:
Option 1 - Manually Update/Add mailbox credentials to Credential Manager & rebuild Autodiscover.xml file
Go into Control Panel > Credential Manager > Windows Credentials > Remove/delete any records with the users mailbox address
Download the SaveCredentials.exe tool from here
Run the SaveCredentials.exe as administrator
Enter the mailbox username and password
Next navigate to %LocalAppData%\Microsoft\Outlook\
Locate the file that ends in Autodiscover.xml
Note: File may look something like this: f0a4256167a8597a89das6hf01c6bb1b - Autodiscover.xml
Delete or rename this file
- Open Outlook
Option 2 - Revert to an earlier version of Office 2016
Go to the following Microsoft article and follow the steps from here Option 3 - Edit registry to ExcludeExplicitO365Endpoint (do at own risk)
- Open regedit
- (Highly Recommended) Create backup. See this Microsoft article
- Navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover
- Add new DWORD, give it a name of ExcludeExplicitO365Endpoint and value of 1
- Restart computer
- Open Outlook, may be prompted once to enter the users credentials