Apple's iOS App Store wasthis week and a rogue server was to blame, according to Apple.
The glitch meant popular apps like Instapaper were rendered unusable. According to Apple, the rogue server wrongly included a digital rights management (DRM) code when apps were downloaded, meaning they wouldn't open, The Telegraph reports.
An Apple spokesperson said: "We had a temporary issue that began [on Wednesday] with a server that generated DRM code for some apps being downloaded. The issue has been rectified and we don't expect it to occur again."
This happened the same week that the iOS App Store. The malware was contained within an app called 'Find and Call'. Download it, and it would secretly upload all your contacts to a remote server. Then it sent messages in Russian to every phone number and email address in your contacts book, advertising the app with a download link. Annoying.
The errant app also popped up on Google's Play store. But it's unusual it made it onto the App Store, seeing as Apple makes a big deal of its tight restrictions.
The App Store glitch was spotted by the developer of the hugely popular app Instapaper, Marco Arment. He put together a list of more than 100 other apps also affected, including Angry Birds Space, Word Lens and Yahoo! Search. Yes, apparently Yahoo has a search app.
"If this happens to you, all of your most active users, the people who will install updates within hours of them becoming available, will be stopped in their tracks," Arment said. "They'll think you're careless, incompetent and sloppy for issuing a release that doesn't work."