What kind of things are you trying to copy and paste, is it just a few cells,
or is it an entire sheet, webpage, etc?

I'd imagine that you might have a virus (worst-case, not necessarily true
right now.. so don't get too freaked out), or it might just be that your
computer is getting old, possibly. I'm no Excel expert, but I'm sure there
are plenty of other explanations..

Jim
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I appreciate any feedback.