Network projectors: frequently asked questions


Here are answers to some common questions about network projectors.

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What is a network projector?

A network projector is a video projector that's connected to a wireless or wired local area network (LAN).

What sets the network projector apart from other presentation methods is that you can connect to, and operate the projector remotely over, a network connection. If your computer can connect to the projector, you can deliver a presentation from any location that has network access, whether it's your private office or a conference room where the projector is located. Those who want to view your presentation must be in the same room as the projector; they can't view the presentation over the network from a different location.

How do I use a network projector?

To start, connect to the projector by using one of the following methods:

  • Open the Connect to a Network Projector wizard by clicking the Start button Picture of the Start button. In the search box, type Connect to a Network Projector, and then, in the list of results, click Connect to a Network Projector.

    After you find a network projector in the wizard, click Connect.

    Once you're connected, you can control your presentation in the Network Presentation dialog box by clicking Pause, Resume, or Disconnect.

  • If you know a projector's address, open the Connect to a Network Projector wizard, and then click Enter the projector address.

What type of address does a network projector use?

Each projector on the network is identified by a unique address. You can enter the address as a URL (a web address, such as http://server/projectors/projector_1) or as a UNC path (a path on a server, such as \\server\projectors\projector_1). Your system administrator might be able to give you the address of a specific projector.

The address is displayed on the projection screen when a presentation is not in progress. If you're using a security-enabled projector, the projector password is also displayed.

How do I give a presentation with a network projector?

You must find and then connect to a projector on your network. For more information, see Giving a presentation over a network.

Why can't I connect to a projector?

This could be caused by any of the following:

  • The projector is turned off.

  • Your computer isn't connected to the network.

  • The projector isn't connected to the network.

  • One or more network-related problems are preventing your computer from connecting to the projector. For example, a router or DNS server might be down.

  • A firewall could be blocking the outbound connection on the projecting machine.

  • One or more services required for network projection might have been turned off by Group Policy.

  • The projector is connected to a different network than your computer. You might need to ask your network administrator for permission to access the network that the projector is connected to.

  • The projector might not be configured to accept ad hoc network connections, even if the projector is connected to a wireless access point. You might need to ask your network administrator for credentials to connect to the network that the computer is connected to, or ask the network administrator to configure the projector to accept ad hoc network connections.

Why do I lose my connection to a projector when I change how my desktop is displayed?

If you change how your desktop is displayed while your computer is connected to a network projector, the connection might disappear without warning. For example, this might happen if you change your desktop from Extend to any of the three other options (Computer only, Duplicate, or Projector only). If you lose your connection, try reconnecting to the network projector.

Picture of the choices for how to display your desktop
The four choices for how to display your desktop

For information about how to display your desktop, see Connect to a projector. For information about how to find a network projector, see Find a network projector.

The video clip in my presentation is "choppy." It plays for a few seconds, stops, and then restarts.

Network projectors are designed to transmit and display still images, such as photographs and Microsoft Office PowerPoint slides—not high-bandwidth transmissions, such as video streams. The projector can transmit video, but the playback quality is often poor.