The printer side works but scanning fails or the computer "can't communicate with the scanner". Network scanning in particular needs the right connection and software.
Work through these in order; most people are fixed by the first two or three.
Network scanning usually needs the full driver/software bundle (not just a print driver). Reinstall it for your model.
Confirm the printer is online and on the same network; if its IP changed, update the scan-to-computer setup.
services.msc › make sure "Windows Image Acquisition (WIA)" is running and set to Automatic.
Permit the scan app/ports in your firewall, or temporarily disable it to test.
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