Hello Petre,
Welcome to the Microsoft Community.
I have carefully read the information you have provided. Thank you very much for the above comments on the performance and analysis of this issue summarized for us based on your experience and continued observations as a software architect.
Like you, I have been a user of Microsoft products for many years. I, along with other community support team members, have responded to a large number of similar user feedback on the Microsoft Community in the last month.
I have tried to provide some help to our dear users within our capacity, but unfortunately, community support agents do not have access to the corresponding Microsoft product development team to provide any technical details to the users. Some users are desperate for access to their files in their personal vaults, and for this case, temporarily transferring the files out is the only suggestion we can offer at this time.
This issue has been brought to the attention of Microsoft and we are continuing to collect feedback from users. Other similar problem manifestations that have been reported so far include:
- Opening a file in OneDrive returns a 404 error;
- OneNote-synchronized notes simply disappearing or becoming inaccessible on the PC. However, they can be accessed normally on mobile or web. (Since OneNote also uses OneDrive to store relevant data, we currently believe that this issue is related to it as well.)
- Earlier, we also gathered a lot of feedback reporting issues with the Personal Vault on/off option, which cannot be set to enable/disable.
Microsoft is doing its best to resolve these issues mentioned above. Thank you very much for your patience in the meantime and for your continued support of Microsoft products. We will let you know as soon as we have any updates on these issues.
Best Regards,
William.Y | Microsoft Community Support Specialist