Microsoft level 3 suggested that, and through a remote session they created and ID that I used on my P/C and copy, and paste failed within 24 hours.
Microsoft Level 3 also reformatted my hard drive and did a factory restore, still failed with in 24 hrs. I'm not sure why some people experience the problem and others don't. I have a friend running windows 11 with MS Office and copy and paste works fine, no issues.