Ad Specifications

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Microsoft Mobile and Windows In-App Rich Media


Mobile and PC App rich media ads. Also known as Ads in Apps or AiA.

Supported art sizes:

  • Mobile Apps:
    • In-Banner 
      • MSN: 320x50, 300x250
      • Skype: 320x50
      • 3P: 300x50, 480x80
    • Expandable
      • MSN: 320x50 --> Full Screen (min 320x480)
      • Skype: 320x50 --> Full Screen (min 320x480)
      • 3P: 300x50 --> Full Screen (min 300x250), 480x80 --> Full Screen (min 480x480) 
  • ​PC Apps:
    • In-Banner
      • MSN: 300x250, 300x600, 728x90
      • Skype: 300x250, 300x600
      • 3P: 160x600, 250x250, 250x510, 728x90
    • Expandable
      • MSN: 300x250 --> 1366x768
      • MSN: 300x600 --> 1366x768
      • Skype: 300x250 --> 1366x768
      • Skype: 300x600 --> 1366x768
      • 3P: 160x600 -- > 1366x768, 250x250 --> 1366x768, 250x510 --> 1366x768, 728x90 --> 1366x768

Supported properties:

  • MSN Apps
  • Windows Apps
  • Skype

3rd Party Rich Media Ad Behaviors and Features Accepted:

  • In-Banner
    • Click to Web / App
    • Click to Full-Screen
    • Dynamic
    • Other MRAID 1.0 features generally supported, exceptions may apply.
  • Expandable
    • Click to Web / App
    • Audio
    • Video
    • Dynamic
    • Other MRAID 1.0 features generally supported, exceptions may apply.
  • Interstitial
    • Not accepted at this time
Spec Classification: 
Rich Media
Spec Placement: 
File Type: 


Max Initial Load File Size: 
Max Animation Time: 
:30 seconds
Backup Image Submission Guidelines: 
Back up image is required for instances when the user's browser does not support creative functionality (e.g. Flash, HTML5, JavaScript). Recommended file size 35K.
Max Video File Weight: 
2.2 MB for progressive
User Initiated Video Max Length: 
:30 seconds
Third Party Serving: 


  • Mobile In-Banner: Adform, Admotion, Atlas, DoubleClick, Flashtalking, Medialets, ONE Creative, Sizmek*, SmartAd Server, Weborama
  • Mobile Expandable:Adform, Celtra, Flashtalking, Sizmek, Weborama
  • Mobile Expandable - Skype Only: DoubleClick, Medialets


  • Windows In-Banner: Adform, Admotion, Celtra, DoubleClick, Flashtalking, Sizmek*, Weborama
  • Windows Expandable: Adform, Celtra, DoubleClick, Flashtalking, Sizmek, Weborama 

*Sizmek: includes in-banner video

Third Party Tracking: 
Submission Guidelines: 

Data Collection:

  • Microsoft permits advertisers to collect user-provided personal information (for example, through web forms embedded in ads).
  • Advertisers may be required to modify ad units or provide additional disclosure in order to be acceptable for advertising on Microsoft sites.
  • Advertisers wishing to collect personal information within advertisements (according to specifications above) must follow these guidelines:
    • Clearly identify the organization
    • Provide link to privacy policy
    • Identify purpose for collection information
Key Creative Guidelines: 
  • Click destination URL must open in a new browser
  • For Mobile App, landing pages must be mobile optimized


  • Audio allowed in Expand panel only, not within In-Banner unit
  • Audio on/off toggle button must be present at all times when sound is available
  • All ad audio must be muted or paused on click-through


  • MSN requires SSL ad serving
  • Both ads and tracking tags must be SSL compliant
  • Ads that are not SSL compliant will not be accepted
  • All 3rd party content must serve SSL (https) compliant ads
Supported Countries: