Hi @Pun1, welcome to the community.
Unfortunately, I have seen this in the past with other security software where they block any kind of remote interaction with their UI, it is meant to prevent a 'hacker' from remotely disabling your PC's security.
If you do not have GoToMyPC configured to blank your screen while you are connected, you could connect to the Host and then have someone in the building go and dismiss the pop-up for you. If screen blanking is enabled and you are unable to access the Host Preferences to disable it (because of the pop-up), I'm afraid you would need to share your password and then change it as soon as you have control of your PC again.
Glenn is a member of the GoTo Community Care Team.
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