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    Senior Program Developer


In Windows 10, many temporary files will be created during normal operations, including temporary installer files. It is necessary for us to delete the temporary installer files because these can slow down the system. In this essay, 3 tips may help you delete Windows 10 temporary installer files.

Part 1. How to Delete Windows 10 Temporary Installer Files

Approach 1: Disk Cleanup

1. In File Explorer, right-click [Local Disk (C:)] to select [Properties].
select properties
2. Click the button [Disk Cleanup] at the bottom-right.
lauch disk cleanup from drive properties
3. Then in the following screen, click [Clean up system files] as the system scan is finished, and the system will be scanned again.
clean up system files
4. Check [Previous Windows installation(s)] in the next [Files to delete] checkbox. Click [OK] to delete them.
delete windows installation
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Approach 2: Windows Settings

1. Open [Windows Settings] by clicking its icon in the left pane of the Start menu.
2. Click [System] > [Storage].
click System in Windows Settings
select storage in Windows Settings
3. Select the disk you want to clean up, generally C disk.
check computer storage
4. Windows 10 will display what is taking up space. Click on [Temporary files].
delete temporary files in C disk
5. In the following checkbox, check [Temporary files] and [Downloads folder], then click the button [Remove files] to delete files.
remove temporary files

Approach 3: Command Prompt

1. Press [Win + R] to open the Run box. Type [%temp%] and then press Enter key.
open command prompt to delete files
2. In the Temp folder containing temporary files. Select the temporary Windows 10 installer files to delete.
open temporary or temp folder

Part 2. What If Windows 10 Temporary Installer Files cannot be Deleted

When we delete the temporary installer files in Windows 10, the “File In Use” notification may pop up because the files have been used by other applications or attacked by virus, or the virus-attacked application is working. It is suggested that you close all opening files or restart the PC.
If this approach doesn’t work, you can refer to “6 Ways to Delete a File or Folder That Can’t Be Deleted on Windows 10”.

Part 3. Recover Deleted Files or Folders via Renee Undeleter

Someone may accidentally delete important files when they are deleting  Windows 10 temporary installer files. At such situation, you should immediately stop the cleanup process, and then recover the files via a data recovery software.
Renee Undeleter is strongly recommended! 6 features can help you quickly recover deleted files if they have never been overwritten!
  • Restore Lost Photos
  • Support Office file preview before recovery
  • Provide quick scan and deep scan modes
How to use Renee Undeleter:
1. Download Renee Undeleter.

Note: Installing the data recovery software in the disk which lost data may overwrites the lost data, so it is better for you to install the software on other disk.

download software button win
download software button mac clear2
2. Open the software and select [Fast Partition Scan].
select scan mode in Renee Undeleter
3. Then select the partition you want to recover, namely the saving position of the target files.
select a drive to scan
4. Select [Fast scan]. Click [Next] to scan the partition.

If you cannot find out the files after the scan, you can repeat the above steps and select [Deep scan] to run a full scan.

Select fast scan mode in renee undeleter
5. Preview the scan results and check the target files. Click [Recover] to bring your files back.
preview before recovery