Windows Temporary Files ~upd~ Jun 2026

At their core, temporary files (often with a .tmp extension) act as a "scratchpad" for your computer. They allow applications to:

You do not need to download "PC Optimizer" software (most of that is malware or snake oil). Windows has built-in tools that are safe and effective. windows temporary files

If you’ve ever run a Disk Cleanup utility or peeked into the C:\Windows\Temp folder, you’ve likely seen a digital graveyard of folders with names like ~$doc.tmp or WinDB473.tmp . You might have wondered: What are these things? Can I delete them? Will my computer explode if I do? At their core, temporary files (often with a

Regularly clean up temporary files using Disk Cleanup or third-party tools to keep your system running smoothly and minimize potential issues. If you’ve ever run a Disk Cleanup utility

Yes. If you have a small SSD (C:) and a large HDD (D:), you can move the temp folder to reduce wear on your SSD and save space.

Have you ever found a weird .tmp file that you couldn't delete? Leave a comment below with the error message—I’ll help you troubleshoot it.

This is the safest method because it only targets files that are not currently in use.