Windows保存臨時(shí)安裝文件的位置主要有四個(gè)，分別是用戶特定的Temp文件夾、Windows Update的SoftwareDistribution文件夾、系統(tǒng)安裝程序緩存文件夾以及SFC或DISM工俱生成的臨時(shí)文件。 1. 用戶Temp文件夾（C:\Users\username\AppData\Local\Temp）用於存儲(chǔ)應(yīng)用程序和安裝程序的臨時(shí)數(shù)據(jù)，可安全刪除舊文件但需避免刪除正在使用的文件；2. Windows Update臨時(shí)文件夾（C:\Windows\SoftwareDistribution\Download）包含更新包緩存，刪除前需停止Windows Update服務(wù)並重啟後恢復(fù)，也可使用磁盤清理工具；3. 安裝程序緩存（C:\Windows\Installer）包含重要安裝文件，建議謹(jǐn)慎操作，避免手動(dòng)刪除以免影響程序修復(fù)或卸載；4. SFC或DISM工具臨時(shí)文件（C:\Windows\Logs\CBS）含系統(tǒng)修復(fù)日誌和臨時(shí)文件，舊日誌可安全刪除。定期清理這些文件有助於釋放磁盤空間並保持系統(tǒng)穩(wěn)定運(yùn)行。

Windows saves temporary installation files in several locations depending on the type of installation or update being performed. These files are typically used during software installations, Windows updates, or system operations and are often left behind unless cleaned up properly.

1. System Temp Folder (User-Specific Temporary Files)

One of the most common places where Windows stores temporary installation files is in the user-specific Temp folder. This folder is used by applications and installers to store temporary data while a program or update is being installed.

• Path: C:\Users\username\AppData\Local\Temp
• Notes: Replace "username" with your actual Windows username. This folder can accumulate a lot of leftover files from failed or incomplete installations.

What to do :

• You can safely delete files in this folder if no major installation or update is currently running.
• Use Disk Cleanup or manually browse the folder to remove old files.
• Be careful not to delete files that are currently in use (you might get access denied errors).

2. Windows Update Temporary Files (SoftwareDistribution Folder)

When Windows updates are downloaded and installed, they're stored temporarily in a specific folder used by the Windows Update service.

• Path: C:\Windows\SoftwareDistribution\Download
• Notes: This folder contains cached update packages. Clearing it will free up space but may cause Windows Update to re-download some files later.

What to do :

• Stop the Windows Update service before deleting files.
• Delete everything inside the Download folder.
• Restart the Windows Update service afterward.

You can also use the built-in Disk Cleanup tool with the “Windows Update Cleanup” option selected.

3. Installer Cache (Program-Specific or MSI Installers)

Some software installers, especially those based on Microsoft Installer (MSI), leave behind temporary files in the system's installer cache.

• Path: C:\Windows\Installer
• Notes: This folder contains important cached installer files used for repair or uninstall purposes. Deleting files here could break installed programs.

What to do :

• Avoid manually deleting files in this folder unless you're absolutely sure what you're doing.
• Use tools like CCleaner or Disk Cleanup with caution here.
• If you're uninstalling software, some cleanup tools may offer safe removal options.

4. Temporary Files from SFC or DISM Tools

If you've used system file checkers like sfc /scannow or DISM commands, temporary files may be generated as part of the process.

• Path: C:\Windows\Logs\CBS
• Notes: This folder contains logs and sometimes temporary files related to system file repairs.

What to do :

• Review the logs if you're troubleshooting issues.
• Old log files can be deleted safely, but avoid removing anything if a system scan or repair is ongoing.

In general, these temporary installation files can take up significant disk space over time. Cleaning them periodically helps keep your system running smoothly without risking performance or stability.

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