MG2520 Scanner not working

[ppmitra]

I have a Dell Inspiron 3048 running Windows 8.1 with which I have a Canon MG2520 connected. Its printer and copying function are working fine, and the printer is connected to the computer. And yet, I cannot make the thing scan. I have reinstalled the driver multiple times, from the CD that came with it, as well from canon's website, but Canon IJ Scan continues to claim that:

1. Scanner is turned off

2. USB Cable is disconnected

Code: 5,156,69

Please help.

[Patrick]

Hi ppmitra,

The 5,156,69 error is usually an indication that security software is blocking communication between your PIXMA MG2520 and your computer.  Please temporarily disable your firewall and anti virus programs and attempt to scan again.

If the error persists, please contact our support group using the following link:

http://www.usa.canon.com/cusa/consumer/standard_display/contact_us_consumer

[ppmitra]

I turned off my firewall, and I have no antivrus software running. But the scanner is still not working.