. HP Support Assistant is able to perform all this, through programmed updates and tune-ups, worked in diagnostics, and a variety of help choices. HP Support Assistant is commonly download by the person when his window is not working .So if you want to download HP Support Assistant you may follow the following steps

• You may download it by visiting HP Support Assistant official site for more information you may visit  :https://www.hpcustomerservice.us/hp-support-assistant.html
• Then further click on HP Support Assistant download option
• When download is completed click on save option then go to your pc and open save item the file which you save and then click right click and go to the option of installation
• When installation is completed then click on restart window and restart your system
• When the system restart click on HP Support Assistant icon menu bar.
• After installation click on running option then your HP Support Assistant will running smoothly in your window.

Damage or corruption of the printer drivers installed on the system can also cause "Canon Printer not activated error code 20". Users experiencing this issue need to completely remove the printer drivers installed on the system using the device manager and then reinstall the printer drivers. This removes all the errors and brings back the printer to its normal state of functioning.