If you are installing your HP All-in-One on a network with the Windows Firewall enabled, you must unblock the
HP software as described below. In addition, you must temporarily disable any other (third-party) software fire-
walls. Otherwise, when you attempt to install the HP software, a Printer Not Found error might appear and
you will not be able to use your HP All-in-One on the network. If you already attempted to install the software
and the Printer Not Found error appeared, see Printer Not Found screen below for information.
What is a software firewall?
A software firewall is a program that protects your computer and alerts you when it blocks any access to the net-
work. The HP software is not a threat to your computer in any way, but the firewall will prevent it from being
installed unless you unblock the HP software.
Windows Firewall
When you install the HP software with the Windows Firewall enabled, one or more Windows Security Alert
messages might appear. If this happens, click the Unblock button.
Third-party software firewall
Third-party firewalls such as Symantec™, McAfee®, and ZoneAlarm® might block the successful installation of
the HP software. For best results, disable the third-party software safely and temporarily as follows:
1. Disconnect the cable to the Internet from your router, modem, or gateway.
2. Look at the Windows system tray in the lower right side of the screen. If the firewall has an icon there, try
right-clicking the icon to display a menu. Then select an appropriate option such as Disable.
3. When you have successfully installed the HP software, re-enable the firewall and reconnect your cable to
the Internet.
Click Unblock
For the latest information on third-party firewalls and answers to Frequently Asked Questions, see
www.hp.com/support. Select your HP All-in-One from the drop-down list. (Example: Photosmart
2575, then select Firewalls.)
Before you install the HP All-in-One
on a network using Windows,
READ THIS FIRST!
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