To resolve the 'Word cannot open the existing file (Normal.dotm)' error, reset the Normal.dotm file, use Open and Repair, and disable add-ins.

If copy and paste is not working in Microsoft Word, this article will help you find possible causes and the ways to fix this issue.

Option 4: Recover from Temporary Files While you work, Word creates “.tmp” (temporary) files that you can manually search to find a copy of your unsaved document.