Perhaps the process is at fault then?

No, it stems from the fact those backup files will refer to open tabs. No open tabs means no backup files.

As that FAQ post states, you should do your own backups so that you have “real” files, not rely solely on “temp tab” files for critical data.

You might wish to provide your Notepad++ setup. Read this FAQ post. That will give us some of that info. Any other information would also be welcome as it helps us get a better idea of the environment you are working in. Info such as, do you run multiple instances, was the backup location a local or network drive, or maybe cloud.

The more you can provide the better chance the members here might notice the reason for you problem. Whilst this may help you prevent a repeat, the original link I provided contains probably the best chance of you recovering some (or hopefully all) of your missing data.

Good luck.
Terry

@Terry-R said in Dozens of open tabs disappeared:

All too many Notepad++ users have misunderstood this process and have lost data as a result.

Perhaps the process is at fault then?

All too many Notepad++ users have misunderstood this process and have lost data as a result.

You suggest that Notepad++ was running all the time. I would be wondering if some external process deleted the relevant files. I hope you can find something to recover.

Terry