Hi @Alice161
Welcome to the HP Support Community. I'd be happy to assist you. This seems like an application issue with MS office. A red circle with a white cross means that a file or folder cannot be synced.
For more info on one-drive icons on MS word, refer to this document.
Have you checked with PDF files or webpages if the issue persists?
Which version of Windows OS are you using?
You may update the MS Office application on the PC. Click here to know how to update.
If the issue persists, repair MS office. Click here to know how.
Hope this helps! Keep me posted.
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KUMAR0307
I am an HP Employee