Hello!
My name is David N., and I am a Community Independent Advisor and Windows fan. I will be happy to assist you with your issue.
This error is generally caused by Windows Defender blocking files that are not malware. It doesn't report that the files are malware because they are not, but its interference prevents the action.
First, I would do a full scan with Windows Defender Antivirus, just in case.
Next, follow the instructions here on how to disable Windows Defender Antivirus. https://answers.microsoft.com/en-us/windows/for...
With this disabled, you will be able to copy your files. Once finished be certain to turn your antivirus back on.
I hope this helps! Please let me know if this resolves your issue or if you require additional assistance.
Regards,
David N.
Community Independent Advisor