Requirements: PowerPoint 2010
  Internet connection
  Internet Explorer, Firefox, or Safari for Mac
  Live ID (Click here to get one.)
   
Step 1 In a target presentation, click Slide Show tab and Broadcast Slide Show button to bring up Broadcast Slide Show Dialog
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Step 2 As applicable, pick a Broadcast Service and reference service agreement
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Step 3 As needed, login in with Live ID
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Step 4 Provide the link to your viewer, followed by starting the broadcast
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Step 5 Once done broadcasting, click End Broadcast to exit
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Limitations:
  • No audio and video
  • No ink annotations or markup
  • No hyperlinked Web page
  • All slide transitions are converted to Fade effect.