Hi,
Did this problem only appear in Word or Office application? Did you check if you can right click copy and paste in Excel or Text? Please check if the right click is working in other applications.
I suggest you open Word in safe mode running the following command: Press Win + R, type "winword /safe" in the blank box, press Enter. If it works fine in safe mode, please check the add-ins in your Word and disable them.
Try to clear the clipboard cache.
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