All my accounts under Accounts tab have disappeared! - Resolved

[Mike or Penny Novack]

"It appears my data file got corrupted about a week ago, not sure what 
triggered it. I likely updated the OS around that time but not sure or 
the timing or if it is related"

This is more general advice than just for gnucash.

IN ADDITION to the regular periodic backups you are making (you DO make 
data backups, yes?) you should always do an extra data backup 
immediately before doing any system update. This, by the way, is another 
reason why you should not accept "automatic" software updates. You want 
to KNOW (for sure) exactly when updates have taken place. So use "notify 
me" and then schedule the activity so you first do a data backup and 
then all the system backups you were notified about since the last time 
(having decided about each if you want it). Real pros would probably 
ALSO do a system backup to make back out easier (if that turns out to be 
necessary).

Michael D Novack