Re: Opeing Encryption Documents other than MS Office mail account

Hi Vinay 

Sorry for the confusion, that is what I meant about needing a valid account to open the file in the desktop application. You can have a valid Microsoft account for desktop applications that is the same as your personal email account.

Or, the users will need to be added as external users in your Azure AD Tenant and can then leverage office on the web within your tenant to open the content. Here are some links detailing this.

Secure external collaboration using sensitivity labels - Microsoft Community Hub

https://learn.microsoft.com/en-us/microsoft-365/compliance/sensitivity-labels-office-apps?view=o365-worldwide#sharing-encrypted-documents-with-external-users