On the Lync 2013 Application Server you will notice that the C:\ space slowly depletes and you cannot understand why.

There is a hidden Windows Fabric folder that is accumulating log files. Here is the location:
  • C:\ProgramData\Windows Fabric\Fabric\log\Traces
  • In this folder you will have .etl files.
The problem here is each time the log file reaches 128MB it creates a new one.


Open up an elevated command prompt and run the following:
  • Logman update trace FabricLeaseLayerTraces -f bincirc --cnf
What does this command do? This will change the logging to circular.

 –cnf is used to “create a new file when the log size has been exceeded”.