Should I uninstall ESET product from the client machine if it need to be reinstalled OS?

[wonglihuang 0]

Hello,

Need I uninstall ESET product from the client machine first  if it will need to be reinstalled OS?

[MichalJ 430]

If you are going to reinstall the OS from scratch, meaning you "wipe the machine" you have two options: 

1. do not remove it
   1. You will have to manually delete the computer entry from ESET management console afterwards 
   2. Upon removing select the option to "deactivate installed products". This will free the license seat from the particular computer
2. uninstall the security product first 
   1. You will still have to manually delete the computer entry from ESET management console afterwards 
   2. Upon removing, you can still select the option to "deactivate installed products", however the uninstallation mechanism should report "freeing of the seat" to the licensing system. 

In general, it really does not matter.

In case of OS upgrade, in case you have installed a compatible version of ESET management agent / security product, they should survive the upgrade.