Fairly obvious answer. Let it close the application (or you can stop the windows service Backup Agent, which is the Avamar client service) Reboot should not be needed.
Hi All; I have question about upgrading avamar client from 7.5.0 to 18.2 , when I upgrade it, it pops up the windows  1) close the applications and attempt to restart them or 2) Do not close application. A reboot will be required   I don't want to reboot server, which option do I need to choose ? Thank you. [IMAGE]
upgrade avamar client from 7.5.0 to 18.2 on windows server