Windows® 8 Cliffs of Dover Fix (is here).

[TonyD]

No, the installed games folder - typically 'C:\Program Files (x86)\Steam\SteamApps\common\il-2 sturmovik cliffs of dover'.

You should be able to type the file name into TrendMicro's exclusion list according to their website. The file name I suggested contains a 'wild card' description so it will exclude all files beginning with 'CloDer', including the original compressed file you downloaded.