Event ID 5722 is logged on your Windows Server-based domain controller

My Original error –

DC=DomainDnsZones,DC=<domain>,DC=co,DC=uk
Default-First-Site-Name\<DC> via RPC
DSA object GUID: eecaebcb-34ce-4ea0-8966-65a6a6bd7699
Last attempt @ 2017-01-06 10:49:52 failed, result 8451 (0x2103):
The replication operation encountered a database error.
793 consecutive failure(s).
Last success @ 2016-12-30 19:48:26.

The following saved me from a demote and re promote on Windows Server 2016 Domain controllers

• For Windows Server 2008 and later versions
  Take one of the following actions:
  • Stop the “Active Directory Domain Services” or LDS instance.
  • Start “msconfig,” and go to the boot pane. Select the OS installation that you want to configure. Select Safe Boot in the Boot options section, and also select the Active Directory repair item. After you click OK, the tool asks you to restart. Restart the computer.
• Log on to the administrator account by using the password that is defined for the local administrator account in the Directory Service Restore Mode SAM. For more information about how to use the offline SAM database, click the following article number to view the article in the Microsoft Knowledge Base:
  223301 Protection of the administrator account in the offline SAM
• Click Start, point to Programs, point to Accessories, and then click Command Prompt.
• At the command prompt, type cmd, and then press Enter.
• NTDSUTIL uses the TEMP and TMP environment variables to create a temporary database during defragmentation. If the free space on your standard volume used is less than the size of the compacted database, you receive the following error:
  file maintenance: compact to d:\compactDB
  Initiating DEFRAGMENTATION mode…
  Source Database: D:\windows\NTDS\ntds.dit
  Target Database: d:\compactDB\ntds.ditDefragmentation  Status (% complete)0    10   20   30   40   50   60   70   80   90  100

  |—-|—-|—-|—-|—-|—-|—-|—-|—-|—-|

  ……………………..Operation terminated with error -1808( JET_errDiskFull, No space left on disk ).

  In the Application log, you see an event that resembles the following:

  Log Name:      Application
  Source:        ESENT
  Event ID:      482
  Task Category: General
  Level:         Error
  Keywords:      Classic
  Description:NTDS (12852) An attempt to write to the file “C:\Users\administrator\AppData\Local\Temp\tmp.edb” at offset 49315536896 (0x0000000b7b6f6000) for 0 (0x00000000) bytes failed after 0.015 seconds with system error 112 (0x00000070): “There is not enough space on the disk. “.  The write operation will fail with error -1808 (0xfffff8f0).  If this error persists then the file may be damaged and may need to be restored from a previous backup.

  In this case, set the environment variables TMP and TEMP to a volume that has enough free space for the task. For example, use the following settings:

  Md d:\temp

  Set tmp=d:\temp

  Set temp=d:\temp

  Note This problem can also occur during an integrity check of the database.

• Run NTDSUTIL.
• For Windows 2008 and later versions
  Type activate instance ntds to select the Active Directory database instance.  Use the LDS instance name if you want to compact an LDS database.
• Type files, and then press Enter.
• Type info, and then press Enter. This displays current information about the path and size of the Active Directory database and its log files. Note the path.
• Establish a location that has sufficient drive space for the compacted database to be stored.
• Type compact to drive:\directory, and then press Enter. Note, in this command, the placeholders drive and directory represent the path of the location that you established in the previous step.Note You must specify a directory path. If the path contains any spaces, the whole path must be enclosed in quotation marks. For example, type:
  compact to “c:\new folder”
• A new database that is named Ntds.dit or AdamNtds.dit is created in the path that you specified.
• Type quit, and then press Enter. Type quit again to return to the command prompt.
• If defragmentation succeeds without errors, follow the Ntdsutil.exe on-screen instructions. Delete all the log files in the log directory by typing the following command:
  del drive :\ pathToLogFiles \*.log

  Copy the new Ntds.dit or AdamNtds.dit file over the old database file in the current database path that you noted in step 5.

  Note You do not have delete the Edb.chk file.