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Sign in. United States English. Ask a question. Quick access. Use the search Find to find the name of the needed account, in filtered records. Finally, events should be filtered by the specified login with the code , where we can find the reason for locking. Then you need to go to the target computer and inspect the event logs there to determine why this machine is trying to logged in with invalid credentials.
To investigate this lockout, you need to look at the IIS logs on the Exchange server. This tool displays information about a locked account with its user state and lockout time on each domain controller and allows you to unlock it by right-clicking on the corresponding account.
The EventCombMT Tool collects specific events from several different servers into one central location. Run EventCombMT. If the lockout problem is caused by Google Workspaces services Gmail, Gdrive Also details about the lock can be seen in the event There you can find the Kerberos codes described above and the IP address of the device from which the failed logons are coming.
Netlogon is a Windows Server process that authenticates users and other services in the domain. Remember to switch Netlogon off after you have logged events, as system performance can be a bit slow due to the debugging process and it will use extra disk space.
Disable Netlogon logging:. In the logs you can find the IPs of the computers which are not shown in the event logs, it may be terminal servers or RDP workstations which are under password bruteforce attack. Helps you to unlock accounts faster through a web-based console or even via email sent from your mobile device. This is a pack of tools from Microsoft that consists of several separate ones, that will help you with Account Lockout troubleshooting. This tool has a built-in search for account lockouts, it gathers the event IDs related to a certain account lockouts in a separate text file.
Enabling Netlogon logging on all DCs is an effective way to isolate a locked-out account and see where the account is being locked out. Specifically, with this add-on you get an extra tab in ADUC called Additional Account Info it helps isolate and troubleshoot account lockouts and to change a user's password on a domain controller in that user's site. This simple utility tries to track the origin of Active Directory bad password attempts and lockout. After that it analyzes each machine and outputs what common causes of account lockouts are present, for example mapped drives, old rdp sessions, scheduled tasks and so on.
Using powershell you can easily filter the event log for events that are related to a certain account and try to figure out what caused the its lockout. You can also use Get-UserLockoutStatus function for troubleshooting persistent account lockout problems.
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