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once i try to install VeeamBackup&Replication the setup refuse to complete it just once started it gives  that 


The error "unknown exception occurred vmaGetpropertiesFromRegistry"

and close the setup and refuse to continue i am sure that happes related to uncorrect uninstalled veeam application is that mean i look for another application ?

I dealt with this issue on a server refusing to upgrade from 12.2 to 12.3, My resolution was to make a config backup, stop all veeam services, Uninstall PostgreSQL, Uninstall VBR and any left over apps not removed by uninstaller, then reinstall with the 12.3 ISO and restore config.