Outlook 2013 The folder you selected is not available


You have Outlook 2013 installed and your mailbox is connected to Office 365. When you attempt to access a shared calendar you receive the following error message:

The folder you selected is not available.

This error is displayed in the following figure:

Folder Error


This problem occurs when Outlook is connecting to your mailbox via MAPI over HTTP.

Note Please use the following steps to confirm the connection with your mailbox is using MAPI over HTTP.

  1. Press CTRL key and right-click the Outlook icon in the notification area.
  2. Select Connection Status, as shown in the following figure.

  3. In the Protocol column of the Outlook Connection Status dialog box, the status will be HTTP if your connection is using MAPI over HTTP.


This issue is resolved by installing the update from the following article.


Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

If you are unable to install the update from article at this time, you can temporarily work around this issue using the following steps.
  1. Exit Outlook.
  2. Start Registry Editor. To do this, use one of the following procedures, as appropriate for your situation.
    • Windows 8: Press Windows Key + R to open a Run dialog box.
    • Windows 7 or Windows Vista: Click Start, and then click Run to open a Run dialog box.
  3. Type regedit.exe, and then press Enter.
  4. Locate and select the following key in the registry.
  5. After you select the key that was specified in step 4, click the Edit menu, point to New, then select DWORD Value.
  6. Type MapiHttpDisabled, and then press Enter.
  7. Right-click MapiHttpDisabled, and then click Modify.
  8. In the Value data box, type 1, and then click OK.
  9. Exit Registry Editor.
  10. Start Outlook.

Note The MapiHttpDisabled registry value is intended for testing or temporary purposes only.

More Information

For more information about the requirements for MAPI over HTTP connections, go to the following Microsoft TechNet website:

Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.


Artikel-id: 3015578 – senaste granskning 24 dec. 2014 – revision: 1

Microsoft Outlook 2013