OA blocks everything. Will not prompt in Other Emsisoft products Posted December 28, 2010 · Report reply Avast(with OA folder excluded) It's not strictly related to the topic but generally speaking I would suggest to be sure that both OA folder and subfolders are excluded in Avast! AV adding them to the exclusions list you can find in the File System Shield settings (real-time protection). Several users tend to simply add OA to the exclusions list you can find in the general settings/options. Actually those exclusions will only be applied to on-demand/scheduled personal scans and not to the Avast! AV real-time protection, as far as I know.