Thank you for your quick answer : I agree, pretty confusing, because on all my laptops (HP, Lenovo and Acer) I only work with touchpads - and this works fine on HP and on Lenovo ! (the Lenovo is an old one which I’m going to replace with the Acer Laptop). I’m not sure if I will involve Kaspersky Technical Support - this is “normally” a time-consuming process. I will try in the next days a wireless mouse for the Acer Laptop. If this works it will be fine for me (as backup solution for safe money transactions … as standard I can still use my HP laptop for safe money transactions ) Maybe I write them that they can test all this by their own on a Acer Aspire ES1-732 Laptop Once again, thank you very much for the quick answer !