Sometimes, though, you’ll have no idea that something went wrong until you try to open the file later. Often, these apps will notice the error and let you know that something went wrong, giving you the chance to try again. Your browser (or other download app) may even have problems writing a downloaded file to disk. Your backup app may have problems when writing out your backup. A compression app may experience problems while creating an archive. An office app might suffer a glitch at the wrong time while saving a document. This can happen in various ways, the most common of which is when an app suffers an error while saving or creating a file. Usually, files become corrupted when being written to a disk.
