How to Enable Users to Login When LDAP Servers are not Reachable and LDAP Authentication is EnabledSummaryWhen LDAP Properties are set to use LDAP Authentication, and under some circumstances LDAP Servers are not reachable then it creates outage for users as they face issues while logging into Servicenow.InstructionsWe can set up one time password for users if LDAP Servers are down / not reachable. To activate one time password, there 2 properties which are of importance. a. glide.ldap.onetime.password.enabled b. glide.authenticate.onetime.password.validity Follow the steps as - Open the list of system properties by entering sys_properties.list in the filter of the application navigator.Find the glide.ldap.onetime.password.enabled property.Set the property to true.To change the password validity time for a user, set the following property to an integer number of minutes:glide.authenticate.onetime.password.validity. Default value of system property - glide.authenticate.onetime.password.validity is 10 minutes. Important note - To receive a one-time password, the user must have notifications enabled on their user profile. The notification is an email message only. SMS messages are not supported.