If your Windows 7 Event Log is getting filled with the following error:

Session “Circular Kernel Context Logger” failed to start with the following error: 0xC0000035

With details like:

Log Name:      Microsoft-Windows-Kernel-EventTracing/Admin
Source:        Microsoft-Windows-Kernel-EventTracing
Date:          15/09/2009 14:48:38
Event ID:      2
Task Category: Session
Level:         Error
Keywords:      Session
User:          SYSTEM
Computer:      Picsoetje-PC
Description:
Session “Circular Kernel Context Logger” failed to start with the following error: 0xC0000035
Event Xml:
<Event xmlns=”http://schemas.microsoft.com/win/2004/08/events/event“>
<System>
<Provider Name=”Microsoft-Windows-Kernel-EventTracing” Guid=”{B675EC37-BDB6-4648-BC92-F3FDC74D3CA2}” />
<EventID>2</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>2</Task>
<Opcode>12</Opcode>
<Keywords>0x8000000000000010</Keywords>
<TimeCreated SystemTime=”2009-09-15T12:48:38.940841700Z” />
<EventRecordID>1421</EventRecordID>
<Correlation />
<Execution ProcessID=”4″ ThreadID=”52″ />
<Channel>Microsoft-Windows-Kernel-EventTracing/Admin</Channel>
<Computer>Picsoetje-PC</Computer>
<Security UserID=”S-1-5-18″ />
</System>
<EventData>
<Data Name=”SessionName”>Circular Kernel Context Logger</Data>
<Data Name=”FileName”>
</Data>
<Data Name=”ErrorCode”>3221225525</Data>
<Data Name=”LoggingMode”>268436608</Data>
</EventData>
</Event>

Then you need to

  1. Navigate to %windir%\panther\
  2. Rename file called setup.etl to something like setup.etl.bak – you need administrator privileges to do that
  3. Restart Windows

After the restart the should be no more new erros.