Problem: Customer discovered that the ULS logs had stopped generating. Within the Logs file there were files but from an old date.

Troubleshooting: I looked in Event viewer and found this:

Tracing Service failed to create the trace log file at location specified in SOFTWARE\Microsoft\Shared Tools\Web Server Extensions\14.0\LogDir Error 0x0: The operation completed successfully. . Traces will be written to the following directory: C:\Windows\SERVIC~2\LOCALS~1\AppData\Local\Temp\.

Resolution:

  1. In Central Admin go to Monitoring>>Configure diagnostic logging
  2. changed the ‘Path’ value to C:\Temp and then back to D:\SharePoint\Logs or %CommonProgramFiles%\Microsoft Shared\Web Server Extensions\14\LOGS\, or whatever it was before! (changing it back and forth resolved this problem) 

The Event Log should stop reporting this error!