Apply conditional formatting to the entire workbook

Hello everyone
Is there a way to apply conditional formatting for all the sheets in the workbook in one shot
The range("A1:B5") is the target range for all the sheets
I tried select all the sheets but I found Conditional formatting button in the Ribbon inactive and fade

Thanks for any suggestions

You should only copy the formatting. Something like:

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As a word or caution - try and avoid excessive use of CF, it can start to slow your file down

Thanks a lot for this great help.
It is very helpful