The maintenance tasks need to be performed first, in the maintenance windows (3-5 am PST). Important: This invitation link will resolve to Server Error: 404 File or Directory not found if the Skype for Business service is installed on the account less than 24 hours ago. Copy the link and send it to the desired contact.Click More Options and select Meeting Entry Info.Select Use Skype for Business on Join Meeting Audio and click OK.Sign in to Skype for Business on the Desktop.Read the Knowledge Base articles on Getting Started With Skype for Business For Windows or Getting Started With Lync 2010/2013 For Windows. Make sure that Skype for Business service is installed on the account, enabled for the user with Enterprise license and the Skype for Business client is downloaded and set up.Read Knowledge Base article How To Fix External Contact's Sign-in To Lync Attendee for more information. Note: In order to be able to invite external contacts, you need to create SRV record for your domain name and have Skype for Business Enterprise license. This article has instructions on how to invite external contacts to Skype for Business Meetings.
