Just to clarify, you cannot UN-lock the PC by sending Ctrl+Alt+Del command, correct? What happens when you simply click on a user icon on the Windows lock screen? When you are in Full Control mode, that is.
Thanks for the report. We didn't change anything in Ctrl + Alt + Del mechanism in this version.
Am I right assuming that rebooting of the remote PC helped? Sometimes it's actually necessary to reboot the remote PC after Host installation. Especially when it comes to using "system" features like Ctrl + Alt + Del.
I've just made a quick search in our license database and found that you have a 5-PC commercial license.
So my remark above about 22 PCs is incorrect. With your license key (for 5 PCs) you can control 5 computers. If you have other commercial keys I didn't find just let me know via email email@example.com