Article ID: 2598365 - View products that this article applies to.
Expand all | Collapse all


Consider the following scenario:

  • A domain account and a Microsoft Office 365 account have the same user principal name (UPN).
  • The passwords for the two accounts differ, and Active Directory Federation Services is not used in the domain.
  • The default lockout value is set to a value other than the default value.
  • You log on to the domain on a computer that is running Windows 7, and then you start Microsoft Outlook 2010.
  • You send some WinHTTP requests to Office 365. For example, you open a shared calendar.
In this scenario, you are logged off from the domain.


To resolve this issue, apply the following hotfix package:
2598374 Description of the Outlook 2010 hotfix package (Outlook-x-none.msp): June 26, 2012

Registry key information

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
After you apply the hotfix package, to have us enable the hotfix for you, go to the "Fix it for me" section. If you prefer to enable the hotfix yourself, go to the "Let me fix it myself" section.

Fix it for me

To enable the hotfix automatically, click the Fix it button or link. Then click Run in the File Download dialog box, and follow the steps in the Fix it wizard.

Collapse this imageExpand this image
assets fixit1
Fix this problem
Microsoft Fix it 50919
Collapse this imageExpand this image
assets fixit2

  • Install hotfix that is described in Microsoft Knowledge Base (KB) article 2598374 before you run this Fix it solution.
  • This wizard may be in English only. However, the automatic fix also works for other language versions of Windows.
  • If you are not on the computer that has the problem, save the Fix it solution to a flash drive or a CD and then run it on the computer that has the problem.

Then, go to the "Did this fix the problem?" section.

Let me fix it myself

After you apply the hotfix package, follow these steps to enable the hotfix:
  1. Click Start, click Run, type regedit in the Open box, and then click OK.
  2. Locate and then select the following registry subkey:

  3. On the Edit menu, point to New, and then click Key.
  4. Type Security, and then press Enter.
  5. Select the Security key, point to New on the Edit menu, and then click DWORD (32-bit) Value.
  6. Type DisableWebAuthenticationType, and then press Enter.
  7. In the Details pane, right-click DisableWebAuthenticationType, and then click Modify.
  8. In the Value data box, type 10, and then click OK.

    This is a hexadecimal value. After you click OK , it is displayed as 0x00000010 (16).
  9. Exit Registry Editor.

Did this fix the problem?

  • Check whether the problem is fixed. If the problem is fixed, you are finished with this section. If the problem is not fixed, you can contact support.
  • We would appreciate your feedback. To provide feedback or to report any issues with this solution, please leave a comment on the "Fix it for me" blog or send us an email.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


Article ID: 2598365 - Last Review: October 22, 2012 - Revision: 6.0
Applies to
  • Microsoft Outlook 2010
kbqfe kbsurveynew kbexpertisebeginner kbfixme kbmsifixme KB2598365

Give Feedback


Contact us for more help

Contact us for more help
Connect with Answer Desk for expert help.
Get more support from