Question regarding Exchange 2013 and the /PrepareSchema needed for CVE-2021-34470

Copper Contributor

Hello experts,


just a quick question here with regards to with regards to Exchange 2013 and the /PrepareSchema needed in addition to application of July 2021 security updates for CVE-2021-34470.


Will it require any downtime of the Exchange Server so that it is advised to run the command during a maintenance window or outside of production hours ?


Thanks and Regards,



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