Windows Security Log Event ID 4801
Operating Systems Windows Vista
Windows Server 2008
Category
 • Subcategory 		Logon/Logoff
 • Other Logon/Logoff Events
Type Success
Corresponding events
in Windows 2003
and before 		 
Discussions on Event ID 4801

4801: The workstation was unlocked

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When a user unlocks his workstation you will see this event.

To find out when the workstation was previously locked look backwards in time for for event ID 4800.

There is a relationship between this event and 4803 (screen saver dismissed) but I can't quite make it out.  For Interactive logons you may see this event or 4803.

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Description Fields in 4801

Subject:

The user and logon session involved.

  • Security ID:  The SID of the account.
  • Account Name: The account logon name.
  • Account Domain: The domain or - in the case of local accounts - computer name.
  • Logon ID is a semi-unique (unique between reboots) number that identifies the logon session.  Logon ID allows you to correlate backwards to the logon event (4624) as well as with other events logged during the same logon session.

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Examples of 4801

The workstation was unlocked.

Subject:

   Security ID:  WIN-R9H529RIO4Y\Administrator
   Account Name:  Administrator
   Account Domain:  WIN-R9H529RIO4Y
   Logon ID:  0x1be4b
   Session ID: 1

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