Software runs on a foundation of other software and interacts with a lot of other software around it. When the company that makes one of those other pieces of software changes its product, it tries to keep the updated software compatible with other software, but they can’t always pull that off.
Even if your software was perfect before, it could start having trouble now when it tries to do the same old things with a lot of changed software from other companies. The number of potential problems grows as time goes by and more changes are made to everyone’s code.
Latest Answers