A Microsoft file hosting and synchronization service.
Did you just run the question through copilot? This is a lot of words to say, 'Google tells me that other people have this issue and I don't know what to do about it'.
The link to giving OneDrive Feedback is helpful. Everyone please go and nag them about this one, it's ridiculous.
Other visitors: the Microsoft support team will NOT call you to help with this, and they do not need remote access to your computer despite what Mia says above. This issue is definitely something wrong with the OneDrive software. Anyone who reaches out to you and asks for remote access to your system is trying to scam you.