The honest situation
HP discontinued support for the LaserJet 1020 and never published a Windows 11 driver for it. Any website offering you a direct "LaserJet 1020 Windows 11 driver" download is not being straight with you — no such official file exists. Those downloads frequently carry bundled adware, and there is no good reason to risk them when free, legitimate alternatives work.
The printer hardware is fine. It is the driver situation that needs a workaround, and there are three reliable ones.
Three workarounds that work
These are listed from simplest to most involved. Try them in order.
- Windows Update built-in driver — plug the printer in via USB and let Windows install its own generic driver. Basic printing usually starts working immediately.
- HP Universal Print Driver (UPD) PCL5 — HP's official universal driver, which supports a wide range of older LaserJet models. This is the most reliable of the three and the one we would recommend.
- Compatibility mode — download the legacy Windows 7/8 driver, right-click the installer, open Properties › Compatibility, tick "Run this program in compatibility mode for Windows 8", then install.
If the printer shows as "Unspecified Device"
This is the classic LaserJet 1020 symptom on modern Windows. Open Control Panel › Devices and Printers, right-click the unspecified device and choose Properties, then Hardware › Properties › Change settings › Driver › Update driver. Choose "Browse my computer", then "Let me pick from a list", and select the HP LaserJet 1022 or 1018 class driver. Those models are close enough to the 1020 that ordinary text printing works correctly.
The USB port trap
The LaserJet 1020 is old hardware and it is notoriously unreliable through USB hubs and docking stations. Always plug it directly into a port on the computer itself, and prefer a USB 2.0 port over USB 3.0 if one is available. A large share of "it just will not install" reports come down to nothing more than this.