Why scanning may be off
A printer can print without scanning being ready, because the two features rely on different pieces of the setup. Scanning to a computer often needs the scan software installed and the scan to computer feature enabled, and on a network it depends on the printer and computer being able to reach each other. If scanning was never fully configured, or a software change switched it off, the option can seem to disappear. Understanding that scanning is a separate layer explains why it sometimes needs to be turned on deliberately.
Turning scanning on
On many HP printers, the scanning software on your computer includes a manage scan to computer option that lets you enable scanning and keep it available. Once enabled, your computer appears as a destination when you start a scan from the printer's panel. On the printer side, confirm the scan feature is active in the settings and that the correct computer is selected. For network scanning, both devices must be on the same network and reachable. Once these pieces line up, the scan to computer option becomes available and stays ready.
Checking it works
After enabling scanning, run a quick test to confirm everything is connected. Place a document on the glass, start a scan from the printer or the computer, and make sure the file arrives where you expect. If the computer does not show up as a destination, restart both devices and confirm the scan software is installed and running. On a network, a firewall or security setting can block the connection even after scanning is enabled, so that is worth checking if a test scan does not go through despite the feature being on.
When it still will not enable
If scanning refuses to turn on, the computer never appears as a destination, or a network setting keeps blocking it, the setup may need a closer look than a quick toggle allows. This is common on shared office computers with tighter security. We enable and repair scanning on HP printers most often, along with other major brands, directly on your machines and network. When scan to computer will not switch on no matter what you try, book an onsite visit at /schedule-an-appointment and we will configure it properly.