Windows Phone Marketplace is currently having some issues with delivering app updates. This issue came to light after the recent Windows Phone Dev Center refresh. Apps like WhatsApp, Microsoft Translator, Lindy Comics had updates available on Marketplace yesterday.
Many Windows Phone users were unable to update these apps even though they are running latest Windows Phone OS available for them. When you try to update these apps, the update process begins and after 75% it fails. Microsoft is yet to respond to this weird issue and we will update you as we get more info on this.
If you face any problems in Windows Phone Marketplace, let us know below in the comments section.