Several things can lead to the "HP printer driver is unavailable" issue. It indicates the driver installed on the system is either out-of-date or not compatible. It also appears because of the missing drivers. Due to this, the system fails to identify the driver and does not allow the printer to function. You won't be able to print, copy and scan your vital documents. Not only printers but also an issue with the device's operating systems can give an error.
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