A family of Microsoft word processing software products for creating web, email, and print documents.
In other words, the System File Checker fixed the problem—but again only temporary.
There must be something on your system that is causing the problem to come back. The difficult part is figuring out what that "something" is.
If the problem exists exclusively in Office programs, you could try a complete uninstallation using the Uninstall support tool (see Option 2 in the article at https://support.microsoft.com/en-us/office/uninstall-office-from-a-pc-9dd49b83-264a-477a-8fcc-2fdf5dbf61d8) and then start fresh with a reinstallation through your account.