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• Outlook 365 Email Keeps Asking For Password When Making Calls
• Why Does Outlook 365 Keep Asking For Password

Original KB number: 3126599

1. Outlook email account keeps asking for password. Here’s how you make Outlook remember your password: Open up your Outlook and click on the File tab. A window will appear, scroll down to theIt also doesnt download any more emails. But it is recommended all your email clients apps use that secure mail mail key as well.
2. Quickly fix your Microsoft Outlook Keeps Asking For Password error, in this video I show you how to fix outlook asking for password error quickly.

Symptoms

Consider the following scenarios.

Scenario 1:

To fix the problem that Outlook keeps asking for password, you can also try starting your Outlook in safe mode and disabling Add-ins. To start Outlook in safe mode, the simplest way is to hold down the Ctrl key while you are clicking the Outlook shortcut.

Microsoft Outlook connects to your primary mailbox in an on-premises Exchange server by using RPC, and it also connects to another mailbox that's located in Office 365.

Scenario 2:

You migrate your mailbox to Office 365 from an Exchange server that Outlook connects to by using RPC.

In these scenarios, you're prompted for credentials, and Outlook doesn't use Modern Authentication to connect to Office 365. After you enter your credentials, they're transmitted to Office 365 instead of to a token.

Cause

Outlook limits its choices of authentication schemes to schemes that are supported by RPC. But the authentication schemes don't include Modern Authentication.

Resolution

Important

Outlook 365 Email Keeps Asking For Password When Making Calls

Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, back up the registry for restoration in case problems occur.

Create the following registry key to force Outlook to use a newer authentication method for web services, such as EWS and Autodiscover. We recommend that users force Outlook to use Modern Authentication.

1. Exit Outlook.

2. Start Registry Editor by using one of the following procedures, as appropriate for your version of Windows:

   • Windows 10, Windows 8.1, and Windows 8: Press Windows Key + R to open a Run dialog box. Type regedit.exe, and then press Enter.
   • Windows 7: Click Start, type regedit.exe in the search box, and then press Enter.

3. In Registry Editor, locate and click the following registry subkey:

4. On the Edit menu, point to New, and then click DWORD Value.

5. Type AlwaysUseMSOAuthForAutoDiscover, and then press Enter.

6. Right-click AlwaysUseMSOAuthForAutoDiscover, and then click Modify.

7. In the Value data box, type 1, and then click OK.

8. Exit Registry Editor.

More information

If you're running Office 2013, make sure that both Outlook and MSO are updated to the December 12, 2015 updates, or a later update release, before you use this registry key.

3114349 December 8, 2015, update for Outlook 2013 (KB3114349)

3114333 December 8, 2015, update for Office 2013 (KB3114333)

Note

Office 2016 doesn't require an update for this registry key to work.

Why Does Outlook 365 Keep Asking For Password

For more information about RPC, see RPC over HTTP reaches end of support in Office 365 on October 31, 2017.