Protected Sheet crash when use the tab key

[Sergio]

I have googled this question in many different ways and I can not find an answer. Here is my problem: I created a file with formulas and macros and of course the worksheet is passwords protected. I can navigate on the file using the arrows and the mouse. I thought that everything was good until I shared the file in the company and half of the team is complaining that when they use the TAB KEY to move from cell to cell the excel file crash.
I know the easy answer is STOP using the tab key... but know I need to solve this problem without unprotecting the sheet....
Does anyone knows a way around? the two post I found in this site do not give an answer.
Thanks
Alex

 

[Sergio]

i had to remove the block cell manually and assigned permission individually to each cell to avoid the crash...thank you for trying