About this tag
The ldap error tag covers issues encountered during Active Directory migrations, particularly when running adprep /forestprep. A common scenario involves migrating from SBS 2011 to Windows Server 2019, where LDAP-related errors can occur if domain controllers do not meet minimum version requirements. These errors often stem from schema master communication problems or outdated domain controllers. Troubleshooting typically involves verifying that all domain controllers run Windows Server 2003 or later and ensuring proper LDAP connectivity. The tag provides a resource for users facing similar LDAP errors during Active Directory upgrades or forest preparation.
  1. mstjohn1974

    Migation from SBS2011 to Serve 2019 error

    I am in the middle of a Server Migration from an SBS2011 Server to a Windows Server 2019. During the step of running ADPREP.EXE /ForestPrep I am encountering the following error: C:\ADPrep\adprep>adprep /forestprep ADPREP WARNING: Before running adprep, all Windows Active Directory Domain...
    • mstjohn1974
    • Thread
    • access active directory administrator adprep claims configuration configuration dfsr domain controller error forest prep fsmo roles ldap error logs migration sbs2011 schema master sysvol user action windows server 2019
    • Replies: 8
    • Forum: Windows Server Forums