I had an issue to launch KIS 2019. It keeps "Loading the application" like foreeever. And i tried to uninstall the KIS 2019, and got a message Error 1306. Due to this matter, i'm planning to a downgrade my KIS 2019 to KIS 2017 that is more stable. My question is :

1. How to uninstall KIS 2019 due to this error 1306?
2. How to keep my license and save it for my next KIS 2017?

Thank you

Hello togechan, Welcome! Re: Uninstall KIS 2019: https://help.kaspersky.com/KIS/2019/en-US/43539.htm - slight variation depending on operating system used. Select "Keep License information" (for 2017) during uninstall sequence, do not select any other options. Best regards.

In addition to what FLOOD has said, it's always best to have the latest version to benefit from improvements/upgrades. As you've had issues with 2019, you may wish to consider downgrading to 2018 which I have found to be stable. However, the choice is yours. You could try 2018 and if not happy, then go back to 2017.

Thank you FLOOD and Fenderman for helping me. I used Kavremover and reinstall KIS 2018, I think it's better than 2019 version.