If "scan" refers to a peripheral device (like a printer or scanner) failing to function:
When searching for "driver scan (21)," the most relevant results typically refer to found during a system scan or steps to resolve specific hardware scanning issues. 1. Updating System Drivers Search results for driver scan (21)
: Visit the manufacturer's support site (e.g., HP Support or Canon Support ), enter your model number, and download the specific scanner or TWAIN drivers. 3. Alternative Tools If "scan" refers to a peripheral device (like
Error codes in Device Manager in Windows - Microsoft Support HP Support or Canon Support )