As we transition to the new Hyland Community, some post links may be temporarily disrupted as we finalize redirects. We apologize for the inconvenience and are working to resolve this as quickly as possible. Details.
You could configure the DAO asorg.alfresco.repo.security.authentication.DefaultMutableAuthenticationDao which can then be configured to allow some operations to pass through without rejection (such as silently ignoring a delete of an authentication from LDAP or NTLM). See the default LDAP authentication configuration.The user will remain in NTLM.
<bean name="authenticationDao" class="org.alfresco.repo.security.authentication.DefaultMutableAuthenticationDao" > <property name="allowDeleteUser"> <value>true</value> </property> </bean>