: In Device Manager , expand Imaging devices , right-click your scanner, and select Uninstall device . Use Action > Scan for hardware changes to reinstall the latest driver.

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

If your system scan showed 21 outdated drivers, you can update them using these official methods:

: Right-click the Start button and select Device Manager . Right-click a specific device and select Update driver , then choose Search automatically for drivers .

For a comprehensive scan that identifies multiple drivers at once:

: Recommended by community users on Reddit as a clean, open-source tool for batch updates.

: A common third-party utility for automatically downloading and installing multiple drivers.