To safeguard your event data, periodically make a backup copy of your calendar by using "File / Backup...". In the event you must restore your calendar, use "File / Restore...".
Each time Remind-Me exits it will automatically make a backup copy of your mydata.bdy file in the "Backup" sub-folder. The backed up copies will have a number appended to the filenames. By default, Remind-Me will keep up to 30 of your most recent data files backed up. If you need to restore from an automatic backup, use the file's modified time/date to determine which copy to restore. The "Backup" folder will be located in your Remind-Me data folder. To change the number of automatic backups you can create a
The backup folder will be located at (AppData is a hidden folder):
For detailed instructions on how to restore a backup, see:
Advanced: You can control the number of automatic backups with a registry value. The default is 30, but if you create a string value named "count" at the location: HKEY_CURRENT_USER\Software\Beiley Software\Remind-Me\CurrentVersion\backup you can set it to however many backups you want to store.