Is it safe to delete Windows upgrade log files?

Setup Log Files: These log files are created while software is installing. … Files Discarded by Windows Upgrade: These are system files that weren’t migrated to your new PC during a Windows Upgrade process. Assuming your computer is working properly, you can delete them to free up space.

Where are Windows Update temporary files?

The temporary update files are stored at C:WindowsSoftwareDistributionDownload and that folder can be renamed and deleted to prompt Windows to recreate a folder. Note that any uninstalled updates that were previously downloaded will need to be downloaded again before they can be installed.