Hi,

Is there are way to reset all the changes done to "Permissions" -> "Admin roles"? Such as membership, etc?

Hello,

Exchange 2013 use RABC to manage permission.

You can set different permission as your requirement.

Understanding Role Based Access Control

http://technet.microsoft.com/en-us/library/dd298183(v=exchg.150).aspx

Hello,

Thank you for your link, I have seen it before, however perhaps I wasn't looking good enough. Could you please elaborate on the process?

Thank you. 

Any customizations made using RBAC perhaps are not reversible but if you want to revert the original permission settings that are applied when Exchange is installed, you may want to re-run setup.exe /preparedomain.

Best practice is to leave the default RBAC roles and create new ones based on the default ones.

Runnig the preparation should reset the RBAC roles. But be aware that it will break all existing roles if you have modified the default roles.

Thank you.

Thank you.