Ehhh. nevermind. Both options didn't worked As i can see all computers affacted by first try of new Agent installation are in situtaion that registry entry saids that old agent (6.5.522.0) is installed but there are no any files, services etc. of it. So i can't use registry cleaning client task (this one which you mensioned in private mesaage) because any agent of this computers is not comunicating with ESMC). On that computers only solution that worked was starting computer in safe mode, use eset uninstaller tool, clean old agent registry entry with it) and then after restart new client is installing flawlessly. But it's not an option with about 100 clients And those machines are conneting with ESMC but they are duplicated in Console
Any other sugestions? Any option for new msi installer release with registry cleaning tool?