How to resolve issues that may occur when you schedule a meeting in Skype for Business Online

Problem

When you schedule a meeting in Skype for Business Online (formerly Lync Online) in Microsoft 365, you may experience one of the following symptoms.

Symptom Cause Resolution
Lync 2010 or Lync 2013 is installed on the computer. However, you can't find the options in Outlook to schedule or to configure the meeting. Either the Lync conferencing add-in is disabled or isn't working correctly. See resolution for Outlook 2010 and 2013
When you try to edit the options for the meeting, you receive the error message: Changes to this occurrence won't apply to the online meeting associated with this series. To change the online meeting, open the series and then make changes. This is expected behavior if you're only trying to edit a single meeting in a recurring series. See resolution for symptom 2
Dial-in conferencing information isn't populated in the meeting invitation. Or, the information that's populated in the invitation doesn't work. The user isn't enabled for dial-in conferencing, or provisioned with the incorrect settings. See resolution for symptom 3

Solution

To resolve symptom 1 for Outlook 2010 or Outlook 2013

Verify that the Online Meeting Add-in for Lync 2010 or the Lync Meeting Add-in for Microsoft Office is installed and enabled in Outlook. To do this, follow these steps:

  1. In Outlook, click the Filetab, click Options, and then click Add-Ins.

  2. Take one of the following actions:

    • If the add-in is in the Inactive Application Add-inslist, follow these steps:
      1. In the Manage drop-down list at the bottom of the dialog box, click COM Add-ins, and then click Go.

      2. Click to select the check box next to the add-in, and then click OK.

        The New Online Meetingbutton should now be available in Calendar View, and the Online Meetingbutton should be available when you create a new calendar item.

    • If the add-in is in the Disabled Application add-inslist, follow these steps:
      1. In the Managedrop-down list at the bottom of the dialog box, click Disabled Items, and then click Go.

      2. Select the add-in, and then click Enable.

      3. Restart Outlook, and then verify that the add-in is displayed in the Add-insdialog box.

        The New Online Meetingbutton should now be available in Calendar View, and the Online Meetingbutton should now be available when you create a new calendar item.

  3. In Event Viewer, view the Application log to see whether an error was logged for Outlook, for Lync 2010 or Lync 2013, the Online Meeting Add-in for Lync 2010 or the Lync Meeting Add-in for Office 2013.

To resolve symptom 2

  • Don't edit a specific occurrence of the Skype for Business Online meeting. Instead, edit the whole series.
  • If you have to change just one occurrence of the meeting, you must create a new meeting to replace the one occurrence or change the whole series.
  • If the error occurs for a meeting that isn't part of a larger series, delete the meeting, and then re-create it.

To resolve symptom 3

Verify that the user is provisioned correctly for the Audio Conferencing Provider (ACP). Verify that the information for that user in the Dial-In Conferencing Control Panel exactly matches the information that the ACP provided.

For more information about how to troubleshoot ACP provisioning issues, go to the following Microsoft websites:

Set up Audio Conferencing for Skype for Business

Still need help? Go to Microsoft Community.