Whwn I tried to install the latest CTM firstly this box is shown. Then followed by the second one. CTM never installed.
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this problem is already reported in this thread:
https://forums.comodo.com/help-ctm/you-must-restart-your-pc-to-finish-installation-t55474.0.html;msg390016#msg390016
make a request thread and the CTM team will send you a hotfix. ;D