Admin control for attachments now available in Office 365 Message Encryption

Great news and I have run the PS command. Now external users can open attachments without being asked for any other account details.

We are only using the two RMS Templates:

The above is from an ETR/Mail Flow rule I setup to test. When I send attachment (Excel) to that non Office 365 email address I receive the email stating 'Galvin, Mark (mark.galvin@xxxxxxx.co.uk) has sent you a protected message.'. I have click the link and it opens in the OME Portal. I have then clicked the 'request one-time passcode to view the message' (as I am testing this from the perspective of a user that does not have Office 365 or any other Microsoft account). Once the one time passcode arrives in my non Office 365 account, I copy the passcode and it opens the email in the OME portal. I then am able to download the Excel file and open without any issue.

Using same Office 365 account I can use the 'Protect' --> 'Encrypt' option in OWA:

Same result as the ETR/Mail Flow rule - perfect.

Now, we mainly use Outlook 2016 ProPlus so I need that Encrypt option to appear in Outlook Desktop. I had read from here that we need to have at least the 1804 build, so I have updated to the 1806 version:

Restarted Outlook and I do not see the Encrypt button anywhere. I have tried under 'Options' then 'Permissions' but just see the 'Connect to Rights Management Server to get templates' and when I click on that nothing happens.

I have installed the AIP Client (we have the Azure Information Protection Plan 1 license on top of our E3 license) but that only gives me any Labels setup in AIP Portal and not the Encrypt option. It does give me the Do Not Forward option but when I click on it it gives error.

Any one know how to get working please?

thanks

Mark