A deadlock is a situation in computing where two or more processes cannot proceed because each is waiting for the other to release resources. This can occur in systems where processes require exclusive access to resources, such as memory, files, or database connections. When a deadlock happens, the involved processes become stuck, leading to a halt in their execution. To resolve a deadlock, various strategies can be employed, such as deadlock detection, prevention, or avoidance. These methods aim to ensure that processes can continue to run without getting trapped in a cycle of waiting. Proper resource management is essential to minimize the risk of deadlocks in software systems.