• Re-enter controller address on DDC 
• error on sql : SSPI Handshake failed with error code 0x8009030c, state 14 while establishing a connection with integrated security; the connection has been closed. Reason: AcceptSecurityContext failed
• You will be able to find the authentication failures/logon events on the Domain controller to which the sql server is communicating.(Event 17806)
• All the citrix service return DBNotFound error when you run the below
• Get-Command Get-*ServiceStatus | Get-Unique | Select Name  
• Get-Command Get-*DBConnection | Get-Unique | Select Name

1. Shut down the problematic domain controller or reboot the DC and let sql to authenticate with different DC.
2. Post confirming please check with the vendor(Microsoft ) for the DC failure.

Problem Cause

• Domain Controller was showing access denied errors when we run  Repadmin /Replsummary  on the Domain Controller.
• Event 17806 on the sql server, sql server was authenticating with one of the failed Domain Controller. 
• If you run the Mcrosoft error exe to validate error 
• No citrix component failure. 

• err 0x8009030c
  # for hex 0x8009030c / decimal -2146893044 :
    SEC_E_LOGON_DENIED                                            winerror.h
  # The logon attempt failed