Clonazepam is generally indicated for seizures and panic disorders while Lorazepam is generally used for anxiety disorders. Another difference is that Clonazepam is taken in two to three doses while Lorazeapam is taken in three to four doses. Clonazepam has a side effect that suppresses depression while Lorazeapam has a euphoric side effect that will make you feel happy.
Alternately, if you open a spreadsheet from OneDrive or the Recent list, Excel will open it in an online viewer first. Click the Edit Workbook button then select Edit in Browser to open the spreadsheet in Excel Online.
I had exactly the same problem in one Spreadsheet while another one open at the same time was fine. I followed the advise from excel but the advanced box edit directly in Cell was already checked. However I found that when I saved the spreadsheet, the problem went away and I was able to type in the cells again.