Software failures occur when a program does not perform as intended, leading to errors or crashes. These failures can arise from various issues, such as coding mistakes, design flaws, or unexpected user behavior. When software fails, it can disrupt operations, cause data loss, or even compromise security. Common examples of software failures include bugs in operating systems like Windows or macOS, which can lead to system instability. Additionally, applications like web browsers or mobile apps may experience glitches that affect user experience. Addressing these failures often requires updates or patches from developers to improve functionality and reliability.