Perflib_Perfdata dat files in temp folder

**chaosblade** · 13-06-2009

Perflib_Perfdata.dat Files stored in temporary folder in my windows xp system. The problem i can't delete/use that file, when i try to delete it says file file is in use. Does anyone know what causes this issue and how to fix it?Any help will be extremely appreciated.

**Lillebror** · 13-06-2009

These files are generated by processes in the normal course of operation. Go into System Properties, Advanced, environment variables, system variables and search for environment variables for TEMP. Click 2 times on it, change the value of variable : % SystemRoot% \ TEMP; del / q% SystemRoot% \ System32 \ *. dat Perflib_Perfdata

**Wynn** · 13-06-2009

Perflib_Perfdata.dat are the temp files folder can be caused by a number of applications that use a performance counter Nero 7 is one of them. They do not cause any problems and user need only worry if they accumulate - normally they are deleted at boot time.

**SalVatore** · 13-06-2009

Files with the name Perflib_Perfdataxxx.dat may accumulate under the %SystemRoot%\System32 folder, where xxx is a random number.These files are generated by processes in the normal course of operation; however, files are orphaned when you do not shut down a computer properly, such as by pressing the power button on a computer.