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How I can diable in firefox dialog box "download error could not be saved, because the source file could not be read. " when file not downloaded

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How I can diable in firefox dialog box "download error could not be saved, because the source file could not be read. " standart download manager when file not downloaded

How I can diable in firefox dialog box "download error could not be saved, because the source file could not be read. " standart download manager when file not downloaded

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It is possible that anti-virus software is corrupting downloaded files or is interfering otherwise.

Try to disable the real-time (live) scanning of files in your anti-virus software temporarily to see if that makes downloading work.

See:

You can try to set the browser.download.manager.scanWhenDone pref on the about:config page to false.

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Thanks for answer but I wont get answer - how disable on all time this dialog box: not show message anytime

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browser.download.manager.scanWhenDone set to false