Download and Install HP Smart app for Windows 11/10 PC. The HP Smart app for Windows can be downloaded from Microsoft Store. Put your cursor in the Windows Search bar and type ‘store’.

If the HP Smart App is not opening, working, or detecting the printer, use the Diagnose and Fix button and see. More suggestions in this post.

The HP Smart app allows users to manage HP printers and is usually installed on HP PCs. It's certainly not supposed to appear on PCs that aren't connected to an HP device such as a printer.

Intriguingly, the HP Smart app doesn't consistently install itself during new Windows installations. One user, Zeuserlios1283, noted that after three fresh OS installations, the app ceased to appear.

The HP Smart app is causing printing issues on Windows 10 and 11. ... Microsoft fixed that issue; then, a few months later, an unpatched critical flaw in the Windows Print Spooler service appeared.