Outlook may take two to three minutes to connect to an Office 365 mailbox

Update information for Windows 8.1 and Windows Server 2012 R2

To resolve this problem for Windows 8.1 and Windows Server 2012 R2, take both of the following actions:

• Apply Windows update 2919355 .
• Apply either Outlook 2013 update 2878323 or Outlook 2010 update 2878254 , depending on your configuration.
• Create the EnableForceHttpProxy registry value and set it to 1.
  
  To create the EnableForceHttpProxy registry value, follow these steps:
• 1. Exit Outlook.
  2. Start Registry Editor.
     
     Swipe in from the right to open the charms, tap or click Search, and then type regedit.exe in the search box. Or, type regedit.exe at the Start screen, and then tap or click regedit in the search results.
     
  3. Locate and then select the following registry key:
     
     
     HKEY_CURRENT_USER\Software\Microsoft\Office\x.0\Outlook\RPC
     
     
     Note In this key path, the placeholder x.0represents 15.0 for Outlook 2013 and 14.0 for Outlook 2010.
  4. On the Edit menu, click New, and then click DWORD Value.
  5. Type EnableForceHttpProxy.
  6. On the Edit menu, click Modify.
  7. Type 1, and then click OK.
  8. Exit Registry Editor.
  9. Start Outlook.

Update information for Windows 7 and Windows Server 2008 R2

To resolve this problem for Windows 7 and Windows Server 2008 R2, take both of the following actions:

• Apply the Windows hotfix that is mentioned in this article.
• Apply either Outlook 2013 update 2878323 or Outlook 2010 update 2878254 , depending on your configuration.
• Create the EnableForceHttpProxy registry value and set it to 1.
  
  To create the EnableForceHttpProxy registry value, follow these steps:
• 1. Exit Outlook.
  2. Start Registry Editor.
     
     Click Start, type regedit in the Start Search box, and then press Enter. If you are prompted for an administrator password or for confirmation, type the password, or click Allow.
     
  3. Locate and then select the following registry key:
     
     
     HKEY_CURRENT_USER\Software\Microsoft\Office\x.0\Outlook\RPC
     
     
     Note In this key path, the placeholder x.0represents 15.0 for Outlook 2013 and 14.0 for Outlook 2010.
  4. On the Edit menu, click New, and then click DWORD Value.
  5. Type EnableForceHttpProxy.
  6. On the Edit menu, click Modify.
  7. Type 1, and then click OK.
  8. Exit Registry Editor.
  9. Start Outlook.

Hotfix information

A supported hotfix is available from Microsoft Support. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, go to the following Microsoft website: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must have Service Pack 1 for Windows 7 or Windows Server 2008 R2 installed.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any previously released hotfix.