The steps are as follows: 1. Delete the update history download data and delete all files in the c: \ Windows \ Software Distribution \ download path.

2. Delete the WindowsTemp file Delete all files in the path C: \ Windows \ temp. Individual files are occupied by the system and cannot be deleted. Ignore them.

3. Delete the temporary files under the configuration file Click Start, enter %temp% and press Enter to delete all the files inside.

4. Close the cache space, right-click the computer to view the properties, select Advanced System Settings, Configuration and System Protection, select Drive C, click Configure to close the system protection, and drag the maximum utilization rate to the lowest. If the application is grayed out after clicking Delete, it means that there is no permission, and you can skip this step.