问题描述：

一些人在关闭outlook再打开时发现“新建Skype会议"按钮消失了。

解决方案：

  1. Exit Outlook if it is running.
    先退出Outlook如果在运行的话。
  2. Press the Windows function key, search for "regedit," and then click OK.
    按下键盘上的Windows键并搜索“Regedit”，然后点击确认。

  3. In Registry Editor, locate the following subkey:
    HKEY_CURRENT_USER\Software\Microsoft\Office\Outlook\Addins\UcAddin.LyncAddin.1
    在注册表里找到HKEY_CURRENT_USER\Software\Microsoft\Office\Outlook\Addins\UcAddin.LyncAddin.1

  4. In the details pane, double-click LoadBehavior. If the value in the Value data box is not 3, change it to 3 and then click OK.
    在右侧的详细表里找到并双击“LoadBehavior”。把键值更改为3。
  5. Exit Registry Editor.
    退出注册表。
  6. Start Outlook.
    重启Outlook。

Important: 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. For your reference: https://support.microsoft.com/en-in/kb/2916599

However, based on the description issue may lie with the Windows registry/Outlook client side. Since our forum mainly focuses on Office 365 Business Online services. Therefore, I’d like to involve our dedicated Windows and Outlook client Support team in finding the solution for you, because the engineers there are more professional in this fields. Please post your question in this forum and our experts’ will focus on the issue users encounter to get it resolved more efficiently.