Open My Computer or Explorer, right-click the system disk, that is, the disk on which Windows operating system is installed, usually the C disk, open the Properties dialog box from the shortcut menu, and click the Disk Cleanup button to switch to the page shown in figure 1. After confirmation, you can clean the specified disk. Don't worry, everything cleaned here can be safely deleted without affecting the system.
Method 2:
When you enter the partition where the temporary folder is located, you can see a "~" character in front of the temporary file name. Press "Ctrl+A" to select all files and delete them (see Figure 2). However, the temporary files currently in use cannot be deleted, because some temporary files need to be used continuously when Windows is running (see Figure 3). After temporarily stopping, you can try to delete other temporary files.
Method 3:
If you still can't save the currently edited Word document after deleting the temporary file, you can press "Ctrl+A" to select all the contents, copy them to the clipboard, and then close the Word program. At this time, the system will prompt: "You put a lot of text on the clipboard. Do you want these texts to be used in other programs after quitting Word?"
Please select "Yes", then reopen the Word program, press "Ctrl+V" to paste the contents of the clipboard, and then you should be able to save it, but please pay attention to changing the name.
If there are formulas, pictures and other objects in the document, you can try to delete them before saving.