LDAP test connection fails with error 40100Issue LDAP Server Operational Status is false. Test connectivity fails with below error. https://instance_name.service-now.com/security_status.do?name=LDAPAuthStatus&action=testconnection { "LDAP Server Name" : [ { "url" : "ldap://10.10.10.10:389/", "operational_status" : false, "test_error_code" : 40100, "test_error_message" : "MID server: Midserver_name \"Status\" is marked down in ECC_AGENT table", "test_success" : false } ]}ReleaseALLCauseMid server mapped in the LDAP record is marked down.ResolutionFix the Mid server issues by reviewing MID server Agent logs.Related LinksKB0661756 MID Server Down troubleshooting.