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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. 

​@mnour  - just wanted to follow up and see if you were able to get an answer from this thread? If so please mark the best answer or if you figured it out post the answer then mark that one as the best answer.

 
 
 
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