Very very bizarre problem that started about a month ago on my work laptop. I've had my OneDrive Work and OneDrive Personal coexisting just fine for about 5 years on the same machine, each one has it's own unique folder in my root user directory.
About a month ago the Personal OneDrive has stopped syncing, it will say it's synced with no red X's or indications of an issue but contents are not uploading or downloading. Meanwhile the Work session of OneDrive is functioning just fine. I only noticed because a file had been modified but when I got home it was the older version, then I noticed a similar issue in the opposite direction, a file added at home did not appear on my work computer.
Here is where it gets bizarre, if I take my work laptop home and WFH my OneDrive Personal session/folder syncs up just fine at home, but a different network.
I've tried a onedrive.exe /reset, I've tried unlinking/relinking my personal account, but the problem persists. Is there anything unique about OneDrive Personal vs Work that would somehow cause an issue, maybe different ports or something? We run a pretty restrictive firewall so ports outside of the norm are blocked and we also have fairly restrictive geofencing too so I'm wondering if Microsoft has changed some storage farm locations and it's getting tripped up by our firewall.