You must logout or close applications that uses your password on other units as your cellphone or tablet and similar. After you have changed your password you must then change the password in the settings of the applications before you start them again so that the application won't use your old password that might put you in a risk of a locked account.
If you work on KTH Windows
Restart the computer after the password change is done and then unplug the network cable from the computer and then log in with your old password.
After that, plug in the network cable again and then lock the computer.
Finally unlock the computer and log in with your new password. If the password change takes place remotely, point 2 is replaced by connecting to KTH VPN.
If you work on KTH Mac
Change your KTH password by clicking on the menulett NoMad and choose "Change password".