My current work around involves creating a new user on the computer and launching DayZ from that user so this could work, although IIRC it did not the last time I tried it.

I'll give this a try on the main user account and report back when I get a chance.

Edit:

I've tried it out as detailed in the other post (Deleting battleye from appdata and downloading etc) and the issue is still not fixed.

Since creating a new user does seem to fix the issue for me, it does appear to be something user account install specific.

Yes, this bug is characterized by the fact that it happens after a specific amount of time once you join the server. For myself, it happens at exactly 15 minutes. Exiting the game after you get the message causes DayZ to freeze and you must Ctrl+Alt+Del to get to the task manager to kill it.

I have also been having this issue. It behaves like the old Battle Eye bug, but is not fixed as has been documented.