Canon Obtaining Your Network Key MP990 - Manual (Page 5)

Step Four
In the Software section, click the link to download the file
CanonAPChkTool.
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5
Step Five
On the next screen, read the information and instructions and
click I Agree - Begin Download
Choose to "Save" the file. Write down the file name and the
location to where the file is being saved.
Step Three
In the Drivers / Software Selection section, select
your operating system in the Select OS dropdown menu.
Download the Canon PIXMA
Wireless Setup Assistant