Hi,
Word creates temporary files to store information it needs to access quickly and to prevent system errors in its file saving scheme. If you open too many files, Microsoft
Windows does not have sufficient file handles to allocate to each open file. Word does not delete the temporary files until the document is fully saved (a full save is a non-Fast Save save), or you close the current session of Word.
For additional information, please see the following article in the Microsoft Knowledge Base:
How Word for Windows Uses Temporary Files
http://support.microsoft.com/kb/89247/EN-US/
However, if you do not want to save the files, you can also uncheck this option:
Click File > Options > Save. Uncheck: Save AutoRecover information every.
Note: We do not recommend uncheck this. We can set the location to other places from the options above.
If anything is unclear or if there is anything I can do for you, please feel free to let me know.
Best Regards,
Sally Tang