What about descriptions: – 8451 The replication operation encountered a database error.
Get your DC backup and try to restore the DC using the latest backup.
At minimum you need the system state backup to recover the AD DB.
Remember to ALWAYS test in lab environments before going to production. If something goes wrong you can always replace the original files with this copy/backup. Check the %WINDIR%\Sysvol\Sysvol folder to make sure it is shared. Check the permissions on the %WINDIR%\Sysvol\Sysvol share. Note: You may not be able to change the permissions on these folders if the Active Directory database is unavailable because it is damaged, however it is best to know if the permissions are set correctly before you start the recovery process, as it may not be the database that is the problem. Make sure there is a folder in the Sysvol share labeled with the correct name for the domain. Open a command prompt and run NTDSUTIL to verify the paths for the file. 10240 /8 /o The output will tell you if the database is inconsistent and may produce a jet_error 1206 stating that the database is corrupt.
They should match the physical structure from Step 2 From command prompt type: ntdsutil files info Output that is similar to the following appears: C:\ NTFS (Fixed Drive) free(850.4 Mb) total(10.2Gb) DS Path Information: Database : C:\WINDOWS\NTDS\– 10.1 Mb Backup dir : C:\WINDOWS\NTDS\Working dir: C:\WINDOWS\NTDS Log dir : C:\WINDOWS\NTDS – 20.2 Mb total – 1.1 Mb res2– 10.0 Mb res1– 10.0 Mb edb00001– 10.0 Mb – 10.0 Mb This information is pulled directly from the registry subkey: "HKEY_LOCAL_MACHINE\System\Current Control Set\Services\NTDS\Parameters". If the database is inconsistent or corrupt it will need to be recovered or repaired. Hopefully one of these options will fix your problem 🙂 Additional Information: Complete a Semantic Database Analysis for the Active Directory Error Message: – System Error : Security Accounts Manager Windows 2000 DCs Unable to Boot into Active Directory Use Ntdsutil to Manage Active Directory Files from the Command This posting is provided "AS IS" with no warranties, and confers no rights.
Just MAKE SURE that the DC and related Active Directory configuration IS OUT of the DC and is NEVER AGAIN related or CONNECTED to the same network where the ORIGINAL HEALTHY DCs are.2 – The recovery solutions posted bellow does not guarantee that your problem will be fixed.The posted solutions are general recommendations that you may decide to follow or not.In this blog post I'll discuss about an issue that one of my friends came across while implementing 'Always On' in one of his fresh Windows Server 2012 environments. Kanchan holds MBA degree in IT and an International Executive MBA in Project Management.At the final step of configuration the wizard failed to join respective database on secondary replica. Hadr Tasks) —————————— ADDITIONAL INFORMATION: Failed to join the database 'Your Database Name' to the availability group 'Your Availability Group' on the availability replica 'Servername\Instance'. He is very passionate about SQL Server and holds MCSE (Data Platform), MCSA – SQL 2012, MCITP – SQL 2008 certifications.
To restore the System State data on a domain controller, you must first start your computer in Directory Services Restore Mode (ADRM).
It's often "different strokes for different folks," as the old saying goes.