Opening .xlsb files

[Michael1161]

This just became an issue. I have been opening these files for years out of my clients Dropbox accounts.

I am now getting a MVB error

Compile error in hidden module: tclsShell

This error does no allow the macros to engage

Microsoft level 1 and level 2 support were unable to solve this issue

[#2]

This appears to be some VBA code either in the file you are opening or in an add-in. If you open Excel from the Icon, does it show this message too? If not it is likely VBA code in the workbook you are opening. I can't say what the solution is without having access to the workbook in question.