Which components need upgrading to make lightbox gallery compatible with ie11 without needing compat

Hi All We are currently using version 8.1.5 and are not in a position to upgrade as present. We have had several complaints that the Lightbox galleries do not appear to work in ie 11 unless compatibility mode is turned on. In debug on browser the following script error is thrown. 'WebForm_DoCallback' is undefined. A quick google hints at a .net 4.5.2 upgrade ebing required to fix this issue. Is this a suggested solution?? PS: I am also read that lightbox be dropped in v9? Brad