To use high resolution photos, we have to use the Set-UserPhoto Exchange cmdlet: 8KB), for use in Outlook, OWA, Skype for Business Web App, and Skype for Business Ħ48×648 pixels for use in Skype for Business and Skype for Business Web App. This photo is only used by Lync 2010 or legacy clients, so we are ok Ģ40×240 pixels if the original picture is larger than 240, otherwise 96 (96dpi, 24 bit depth, approx. However, if we manually update the thumbnailPhoto attribute in AD the photo in the user’s mailbox will not automatically be updated. If we upload a photo to Exchange, Exchange will automatically create a 64×64 pixel version of that photo and update the user’s thumbnailPhoto attribute.

2KB), the size used for the AD thumbnailPhoto attribute. In addition to that, Exchange automatically resizes these photos for use in different products as needed:Ħ4×64 pixels (96 dpi, 24 bit depth, approx. In Lync 2013 (and Skype for Business Server 2015) photos can be stored in the user’s mailbox (when using Exchange 2013), allowing for photo sizes up to 648×648 pixels. This looks ok in the Lync and Outlook client, but results in a blurred photo when Lync, for example, attempts to upscale the image for use in a conference. In AD we can use images no greater than 96×96 pixels in resolution and 100KB or smaller in size. There are several posts out there about how to upload users’ photos into Active Directory (AD) so they can be used by Exchange or Lync, but very few on how this works or how to export them if we need to.

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