To **log in to an HP printer account**, you typically need to sign in through either:

– **HP Smart app or HP Smart website (123.hp.com)**, where you can manage your printer, print, and access additional features. If you experience sign-in problems on Windows, you may need to enable browser prompts to open the HP Smart app or use HP Easy Start as a workaround[1][3].
– **HP Customer Account Portal**, which manages your personal or business account with HP, including orders and saved printers, accessible at the HP website sign-in page[2][4].

For setting up or logging into your printer using the HP Smart app:
– Download and install the app from 123.hp.com or your device’s app store (Windows, macOS, iOS, Android supported)[3].
– Open the app and sign in with your HP Smart account credentials. If prompted by a browser, enable “Always allow” and open the HP Smart app to complete login[1].

For business or advanced service tools, you might use PrintOS, which requires a separate login at printos.com[5].

If you forgot your password or need to reset it, you can do so on the HP website login page[2].

**Summary:**
– Use the HP Smart app or 123.hp.com to log in for printer setup and management.
– Use HP’s customer account site to manage your profile and purchases.
– If login issues occur on Windows, allow browser prompts or try HP Easy Start[1].

This should cover the general login procedure for HP printer-related accounts.