Yes, I received the exact same reply from MS support engineer.
Having the same issue with an EXCELL file...
I escalated to Microsoft support and got the folowing response:
The issue has been escalated to the RMS dev team and they are working
on a fix. Here's the official response:
We have recently become aware of an issue with Microsoft Information
Rights Management Trial Service. Some users may not be able to open
protected content that use this service. Please note that Enterprise
customers using their own internal RMS 1.0 and AD RMS infrastructure
are not affected by this issue.
We have isolated the root cause of this issue. To resolve this, we
need to make a change to the Microsoft Information Rights Management
Trial Service. Please rest assured that your content will continue to
be accessible after this change is in place.
It is the RMS team's top priority to bring this issue to resolution.
We will need to devote additional development and test time to ensure
a high quality fix . We estimate that we can address the issue which
requires the development and testing of a fix within the next few
weeks.
We sincerely apologize for the disruption this issue has caused and
will provide any updates ASAP.