Remove "Add account" from the new Outlook and block access to personal accounts

[csrswalch]

We'd like the ability to:

1. Remove "Add account" from the user interface of the new Outlook: We've prevented adding via policy however users still run through the process entirely for it to only be blocked at the final sync which is counter-intuitive.
2. Block access to any existing personal accounts: Any personal account that was configured prior to implementing the PersonalAccountsEnabled policy is still accessible. 

Note: The following is what we've implemented to prevents adding additional personal accounts:

Set-OwaMailboxPolicy -PersonalAccountsEnabled $false -identity OwaMailboxPolicy-Default

Thanks!

[#2]

@csrswalch 

We have implemented the same OWA policy for few tests users for restrict them adding their personal emails accounts in new outlook.  outlook.com and hotmail.com accounts are blocked.. Yahoo and Gmail accounts still works and able to add by the test users. Please help

[#3]

Intune have this policy for for MS outlook 2016 which is not working with new outlook.. wanted to implement the same but no luck with new outlook

[#4]

@tapandewanjee19 

Yes, the Intune policy is not working. Also MS has not provided any suitable solution yet.

[#5]

Please check if this helps. I tested and it blocked to add account

https://learn.microsoft.com/en-us/answers/questions/692369/can-you-lock-outlook-to-only-one-account-...