Enable TFS Trace

Enable Component Trace in TFS AT

How to: Use Web Services to Enable and Configure Trace for Team Foundation Server Components

Enable Globally Trace in TFS AT

1. Open web.config file in C:\Program Files\Microsoft Visual Studio 2008 Team Foundation Server\Web Services

2. Enable traceWriter to write to file:

<add key="traceWriter" value="true"/>

3. Change the trace switches to

    <system.diagnostics>
        <assert assertuienabled="false" />
        <trace autoflush="false" indentsize="4" />
        <!--  Trace Switches
            Each of the trace switches should be set to a value between 0 and 4, inclusive.
              0: No trace output
              1-4: Increasing levels of trace output; see Systems.Diagnostics.TraceLevel
        -->
        <switches>
            <add name="API" value="4" />
            <add name="Authentication" value="4" />
            <add name="Authorization" value="4" />
            <add name="Database" value="4" />
            <add name="General" value="4" />
            <!-- WorkItem trace switches -->
            <add name="traceLevel" value="4" />

             <!-- Test Tools trace switches -->

             <add name="EqtTraceLevel" value="4" />

         </switches>        
    </system.diagnostics>

Enable TSWA Trace

Uncomment the system.diagnostics section in the TSWA's web.config file.

   <system.diagnostics>    <trace autoflush="true">      <listeners>        <add name="TeamPlainTracer" type="System.Diagnostics.TextWriterTraceListener, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"          initializeData="(Log Folder Path)\TswaLog.txt" />        <remove name="Default"/>      </listeners>    </trace>    <switches>      <add name="TSWA.General" value="Verbose"/>      <add name="TSWA.Application" value="Verbose"/>      <add name="TSWA.TeamFoundationServer" value="Verbose"/>      <add name="TSWA.UserControl" value="Verbose"/>      <add name="TSWA.Configuration" value="Verbose"/>      <add name="TSWA.Security" value="Verbose"/>      <add name="TSWA.API" value="Verbose"/>    </switches>  </system.diagnostics>

Enable TFS Client Logging

https://blogs.msdn.com/edhintz/archive/2007/03/30/tfs-client-tracing.aspx

Enable TFS Build Service Logging

Uncomment the system.diagnostics section in the tfsbuildservice.exe.config, which is located at <VS Installation Folder>/Common7/IDE/PrivateAssemblies/.

   <!-- Trace settings.
       Uncomment the system.diagnostics section below to get a trace log for the
       Team Build Service. Ensure that the C:\logs directory exists and is
       writeable by the Build Service user. 

       The following trace categories are provided for Team Foundation:
        - API: Covers method usage, service to web service calls (from the caller's
         perspective), public methods.
       - Authorization: Covers authorization related components
        - Authentication: Covers authentication components
      - Database: Covers database interaction of the component
        - General: Covers cases that do not fit the above categories.
        
      Trace Switches
       Each of the trace switches should be set to a value between 0 and 4, inclusive.
         0:No trace output
         1-4:Increasing levels of trace output; see Systems.Diagnostics.TraceLevel
  -->

  <system.diagnostics>      
    <switches>
      <add name="API" value="4" />
      <add name="Authentication" value="4" />
      <add name="Database" value="4" />
      <add name="General" value="4" />
    </switches>
    <trace autoflush="true" indentsize="4">
      <listeners>
        <add name="myListener"
            type="System.Diagnostics.TextWriterTraceListener"
            initializeData="C:\logs\buildmachine.log" />
      </listeners>
    </trace>
  </system.diagnostics>