Security certificates of some Mac OS X apps expire on Wednesday. Some apps require users to delete and reinstall to work properly. Problem affects all versions of OS X, right up to El Capitan. Users had to resort to deleting apps and reinstalling them to get updates working. Fingers crossed for Apple to fix problem before any other security certificates expire. Back to Mail Online home. Back To The Top of the page you came from: http://www.mailonline.co.uk/news/magazine/storystory/storyline-storylines/storylines.”]
Source: https://gizmodo.com/faulty-security-certificates-are-screwing-up-some-mac-a-1742306747