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Exchange Impersonation for all resource mailboxes is mandatory for the service account(s)
Enabling OAuth is a global system change and cannot be applied to individual profiles
ResourceXpress supports only one Office365 TenantID (one directory)
ResourceXpress Settings
To configure OAuth in ResourceXpress first sign into the admin console, using the navigation menu across the top select Administration Settings then System Settings, the OAuth options can be found under the Resource Server tab.
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