Stop Auto correcting certain words
Just as in Word when you type: i.e ihs, it will auto correct to "his" but it will place a little grey bar under that word that has a pull down menu allowing an option "Stop automatically correcting this word." Excel does not have that feature, must enter auto correct menu and use the exception menu to place it on the list. Change Excel to have same options as Word.
We have good news to share. In the January 2019 release of Excel for both Mac and Windows, this issue has been greatly improved. Once you install the update, Excel will allow you to override any autocorrection simply by going back and typing over the correction. For example, if you type “HSA” into cell A1, Excel will autocorrect it to “HAS”. If you go back and type “HSA” again in the same place, Excel will not correct it again. It will still autocorrect “HSA” if you type it into a different location, or if another autocorrection happens before you change “HAS” back to “HSA”. To summarize, Excel will no longer make the same autocorrection 2 times consecutively.
This fix is included in Excel for Mac if you have version 16.20 or greater, and Excel for Windows if you have version 16.0.11126 or greater.
Stop Auto Correct in specific cells.
Forgot to add: In Word under AutoCorrect Options, there is a Tab "Other Corrections" and under that an option "Don't correct this word". Excel does not have that option. Why?