Note: The Internet Explorer 11 desktop application will be retired and go out of support on June 15, 2022 (for a list of what's in scope, see the FAQ). The same IE11 apps and sites you use today can open in Microsoft Edge with Internet Explorer mode. Learn more here.

You cannot open a rights-protected e-mail message in Microsoft Office Outlook Web Access (OWA) by using the Rights Management Add-on (RMA) for Internet Explorer.


This issue may occur when OWA uses form-based authentication. RMA does not support form-based authentication.


To work around this issue, save the rights-protected e-mail message as a file on the hard disk. Then, open the file.

Note Rights-protected e-mail messages use the .rpmsg file name extension.


Form-based authentication requires that the source URL appears in a browser window. However, RMA does not support displaying the source URL in a browser window. RMA expects the URL to be a binary data stream that does not appear in an HTML window.

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