Recently we completed our cycle of ‘Patching SQL Server’ and that created a perfect opportunity for me to write a short article. If your applications / sproc use Extended Events then you would have noticed your errorlogs swelling (using ‘dbghelp.dll’ version ‘4.0.5’)
You can perform a quick search of your errorlogs:
EXEC master.sys.sp_readerrorlog 0,1,'dbghelp'
Error Message: using ‘dbghelp.dll’ version ‘4.0.5’
Cause: Every time sys.fn_xefile_target_readfile() is called. Refer to KB2878139
(In our case we use 3rd party monitoring tool Spotlight (ver10.5) and it absolutely swamped our error logs. Organizations using SharePoint 2013 have reported this issue as well.)