If you notice your dishwasher leaving white residue on your dishes, it's probably due to hard water. When the water dries, minerals are left behind. This is most common on glass dishes and appears as a white film on dishes after the dishwasher. White residue can also occur if your dishwasher filter is dirty and hasn't been cleaned, if your rinse aid has run out, or if too much detergent has been used.
If your dishwasher leaves cloudy residue after the wash, it indicates a problem with its cleaning or rinsing process. While simple fixes may help, repeated residue is often an indication of something more serious. In situations like this, calling in an expert for dishwasher repair can diagnose the issue and restore your dishwasher.