Unable to open files from OneDrive personal vault

I'm no longer able to open any Office 365 file (pdf files, for example) on Android, *if they are located in the Personal Vault*. Any such attempt fails with a pop up message stating that "We can't open this file. <fileName> might have been moved or deleted, or you might not have permission to edit it".

Here are some of my observations:

1. That happens despite being already fully authenticated - otherwise we won't even been able to even make the file selection.
2. My default app in charge to open that file type is part of Microsoft's own and properly installed Office 365 suite. Therefore, it was *supposed* to have been installed with the right permissions already set up for all use cases, including the OneDrive Personal Vault.
3. I am the administrator on my Android phone. I can open update, delete or read any of my own 365 office files including any of the ones residing in OneDrive - not just on any of my phone's folders, but none that is part of my Personal Vault. By contrast, I don't have such an issue on any of my Widows systems. On Mac, the Personal Drive is not yet supported at all - fair enough. However, on Android, something has changed and it has changed lately.
4. Never had any problems before, until about a month ago when I have accepted a new 365 Office official update/release from Microsoft. Ever since, this critical issue remained consistent no mater what I 've tried
5. I have exactly the same issue on Android when trying to use the web app from any browser. Again, this did not happen before that bogus update.

I suspect a fundamental security/permission handling bug introduced in that bogus update pushed out lately.

As a side note, please stop suggesting us to copy of move the files out of the Personal Vault in order to open them. That is *not* an acceptable work around - it simply defies the entire PV purpose, Honestly admitting that the Personal Vault is "Temporary Out of Order" would be a much more desirable approach. That would buy MS some time to meanwhile find a fix to this critical issue. A lot of people that I know are already so upset, that they threat mass quitting OneDrive *just for this particular reason*. That would be such a shame, and a big loss, considering what an outstanding product OneDrive actually is.

Petre Suprovici,

A retired software architect and a Microsoft friend, not a hater