Dear all,
may I move an avast license on a different PC ?
My laptop is quite old and I want to change. May I put the license on the new PC?
Thanks
marco
a bought license is valid for the amount of computers/years you bought it fore
if only fore one computer uninstall avast on old, install avast on new and insert license
Thanks 
Yes.
Uninstall the version of avast on the old system, you may also need to delete the device listing on your my.avast.com account. Now you are good to install Avast on the new system.
You can use the existing licence file on the new installation, provided you saved it.
Or use the - Resend avast License https://www.avast.com/resend-license-paid.php, you will need to enter the email that you used when purchasing the license, e.g. the one that the original email with the link was sent.
You should also be able to connect this new installation (device) to your my.avast.com account, license section and use that.