thumbprint/finger scanner appears to be locking our AD account

Specifically my account.  Thought i would test this.

Managed to set it up fine, and can log into the laptop fine.  Problem is that something is locking out the account every few seconds...

I've now shut down my ipad and blackberry that used active sync and shut the laptop down, but still locking...

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Jeff GloverSr. Systems AdministratorCommented:
Have you changed your password lately>
CHI-LTDAuthor Commented:
yes (forgot to mention that bit) on another machine i changed my password to see how it works...
Jeff GloverSr. Systems AdministratorCommented:
Well, if you recently changed your password and it started causing lockouts, the most common cause, if you are using RDP to manage servers, is that you have an open session somewhere. Also, if you (this is not a good practice but I have seen it way too many times) have any services starting using your credentials, it will cause it. You can try filtering the Security Event log on your Domain controller looking for Event 4740 (for Server 2008 and above). It may give you more information.

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CHI-LTDAuthor Commented:
found event logs and my netwrix pointing finger (excuse pun) to my terminal server session (which must have been there but couldn't see it).
CHI-LTDAuthor Commented:
now my own desktop is locking my account...
Jeff GloverSr. Systems AdministratorCommented:
Look in Credential Manager in Control Panel
CHI-LTDAuthor Commented:
lots of old o365 test accounts, now deleted..
also changed my PW..
CHI-LTDAuthor Commented:
still doing it..
ive had this before im sure..
Jeff GloverSr. Systems AdministratorCommented:
This is one of the reasons I never liked Fingerprint scanners (I know it is the wave of the future but....). What brand is your laptop? Some have their own proprietary Credential managers (like HP)
CHI-LTDAuthor Commented:
im not sure the laptop is the problem now, as its my desktop locking me out by the looks of things...
Jeff GloverSr. Systems AdministratorCommented:
Then it can be anything. If you are using Lync, you can try logging off and clearing credentials. You can try removing your outlook profile and recreating it. Look in Services to make sure nothing is running with your credentials. If you have any manually mapped shares (where you entered username and password), recreate them.
  Sorry for the Shotgun approach but it can really be a lot of things. You have rebooting the workstation, correct? It is the first thing to always try with Microsoft.
Jeff GloverSr. Systems AdministratorCommented:
You can also try putting wireshark on the workstation and seeing if anything is trying to send your username. Just a thought.
CHI-LTDAuthor Commented:
Kerberos pre-authentication failed.

Account Information:

   Security ID:  ACME\administrator
   Account Name:  Administrator

Service Information:

   Service Name:  krbtgt/acme

Network Information:

   Client Address:  ::ffff:
   Client Port:  50950

Additional Information:

   Ticket Options:  0x40810010
   Failure Code:  0x18
   Pre-Authentication Type: 2

Certificate Information:

   Certificate Issuer Name:  
   Certificate Serial Number:  
   Certificate Thumbprint:

Certificate information is only provided if a certificate was used for pre-authentication.

Pre-authentication types, ticket options and failure codes are defined in RFC 4120.

If the ticket was malformed or damaged during transit and could not be decrypted, then many fields in this event might not be present.

Keep me up-to-date on the Windows Security Log.
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Windows Server 2008

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