A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
This is a widespread problem. I work with multiple workbooks open all day long. Intermittently can't type, can't copy but simply click on another sheet in the same workbook and then back to your original sheet and everything works again. It's so bad that at times, I have to switch back and forth between sheets each time I change cells and need to type.
Just so you understand Microsoft, here is example of what I do regularly: Working in sheet 1 Go to cell C19 and can't type, click sheet 2 and then click sheet 1 and can type in C19. Go to C20 and can't type, switch to sheet 2 back to sheet 1 and can type in C20....keeps going on for like a minute...
I believe it is a bug with Excel trying to autosave your open workbooks. It could be some recalculation bug but my money is on autosave. Makes sense, Excel trying to save your background sheets but it actually activates one of them in the saving process and your forefront workbook stops responding.
Win 7 Pro, Office Professional Plus 2016
This same issue occurs with prior versions of Excel and no fix has been suggested for several years.