Very, very slight correction to Richard Speed’s article but I do believe that PST stands for ‘Personal STore(age), no tables involves it's basically a massive text file. Unless fellow commutards know better and can correct me - which is fine, as only idiots believe they know everything and aren’t open to being corrected!
And historically, PST files never liked being on any sort of remote storage, even having them on a local files server could be an issue. So, yes I can well imagine that if one got lifted and shifted to OneDrive, then all sorts of interesting hilarity might ensue.
I’ve said this before and I think it's worth repeating, Window’s biggest advantage is that it works on all manner of oddball legacy equipment, and Window’s biggest problem is that it works on all manner of oddball legacy equipment!
And I think that this is a case in point, PST files, legacy, but yet still used by many customers, don’t take kindly to being moved to remote storage - but are the people currently developing Windows even aware of this and other (legacy) technologies?
What I firmly believe MS should have done with Windows 10 was to initiate a full rewrite, dump all of the legacy baggage,’oh you are still using a scanner application written in 1995, no updates available - tough, will not work in Windows 10, get a new scanner’! But they didn’t; they had the opportunity to draw a line in the sand and move on. But they didn’t, they caved to ‘backwards compatibility’, and this is the result - and it can only get worse!