They are also created when installing software. What, and When, to delete safely Never delete the TEMP Folder. Your applications use the TEMP folder to store temporary information, and won't function properly if you try to remove them. These files also take up much needed hard disk space. You should never delete any files from this directory, unless the dates of the files are earlier than the previous time you booted up.
Lets face facts.
Leave deleted .tmp files in the Recycle Bin for a little while - in case you need to Restore any. Totally removing TMP files does give considerable speed improvement on some systems. When shutting down your computer, it's always best to left-click the Start button and select Shut Down so your PC gets a chance to save all that information. This simple procedure allows the operating system to save important cache information to your hard drive and to update any Registry changes. To access it you must open Windows Explorer View Folder Options View , and in Hidden Files select Show all files and click OK .