Scenario:
When we try changing the short date format to ‘DD-Mon-YYYY’ and long date format to ‘DD Month YYYY’, the preference reverts to default on saving. We were abe to set the option in Set Preferences but not in General Preferences. We tried using different browsers and all the users are facing this issue. We also tried disabling the Redwood experience preference in Set Preferences as per the instructions from NS support team but the same did not resolve the issue.
Solution:
1) Setup > Setup Manager
— click Company
— click General Preferences
2) set the Date Format to D/M/YYYY
— save the settings
3) change the Date Format to requested DD-Mon-YYYY
— save the settings
4) change the Long Date Format to D Month YYYY
— Save the change
5) change the Long Date Format to DD Month YYYY
— Save the change