A user may experience one or more of the following symptoms in Outlook on the web (formerly known as Outlook Web App):
A user cannot view or change their mail settings in Outlook on the web. When they try to access mail options in Outlook on the web, they receive the following error message:
Access to Options hasn't been turned on.
When a user tries to set up automatic replies or email signatures in Outlook on the web, they receive the following error message:
The option you chose isn't available.
Some options are missing under Settings in Outlook on the web.
This issue may occur in the following scenarios:
Scenario 1: The MyBaseOptions role isn't enabled on the role assignment policy that's assigned to the mailbox
Scenario 2: You recently switched Office 365 plans.