Regular expression to find non-ascii characters in a large file in notepad++

Recently I face an issue while importing a large xml file because of a some invalid characters in XML content. Since it is a large file, the regular expression search in notepad++ helps to find the non ascii characters. [^\s\x20-\x7E] Thanks to :https://notepad-plus-plus.org/ , https://stackoverflow.com/questions/43334055/notepad-remove-non-alpanumeric-characters