Hi MathijsMoonen,
The Windows Firewall could cause this to occur. To temporarily disable the Windows Firewall, please follow these steps:
1. Click on Start and then Control Panel.
2. Click on Security Center and then Windows Firewall.
3. Select OFF and then click OK.
Once disabled, open the Canon IJ Network Tool to verify communication:
1. Click Start point to All Programs, Canon IJ Network Utilities, Canon IJ Network Tool and then click on Canon IJ Network Tool.
2. Select the machine and click Utility.
3. Select Network in the pop-up menu.
4. Select the machine and click Network Settings.
Once set, please attempt to print. If the issue persists, please try this:
1. Press <SETUP>.
2. Press the right arrow key to select Device Settings and press OK.
3. Press the down arrow key to select LAN Settings and press OK.
4. Press OK on Confirm LAN Settings.
5. Press OK on WLAN Settings List.
The IP address will be in this list, please copy the address down on a piece of paper.
On the computer, please follow these steps:
1. Click on Start and then Control Panel.
2. Click on Printers.
3. Right click the PIXMA MX920 and left click on Properties.
4. Click on the Ports tab.
5. Click the Add Port button.
6. Choose Standard TCP/IP Port.
7. Click New Port.
8. In the wizard, click Next and then type the IP address of your printer in the box.
9. Click Next.
10. Click Finish.
11. The checkmark should be next to the port that we just created. If not, please checkmark it.
12. Click Apply and OK.
The issue should be resolved.
If you continue to have difficulties, please contact our support group using the following link:
http://Canon.us/ContactLI
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